Showing posts with label pollution. Show all posts
Showing posts with label pollution. Show all posts

Monday, June 3, 2019

World Bicycle Day Blog Post – “Cycling” Down Memory Lane

“Cycling” Down Memory Lane 

CYCLE TOWN PUNE 
A Punekar Cycles Down Memory Lane
By
VIKRAM KARVE

Today 
 the 3rd of June 2019  is World Bicycle Day. 

On the occasion of WORLD BICYCLE DAY  it would be apt to post a piece I wrote 9 years ago called CYCLE TOWN PUNE – harking back to memories of the 1960s and 1970s when Pune was known as the Cycle Capital of India. 

In theory – it is possible to ride a bicycle even today in the city of Pune – especially on BRTS Roads – which have dedicated “Cycle Tracks”.


But – in practice – it is not feasible to commute on cycles in Pune – since the cycle tracks are encroached upon/damaged and are unfit for cycling (even the pedestrian lanes are encroached and are unfit for walking).


Of course – cycling on roads had become dangerous due to the heavy and chaotic traffic.


But – this was not so in the Pune of Yesteryear – when – the bicycle was the primary mode of transportation – and – we enjoyed cycling all over – and  Pune was indeed a “Cycle Town”.


Let me share some memories of those carefree days of cycling.



I am sure you will enjoy these reminiscences  and maybe  this will tempt you to  hark back to your good old days and memories of your hometown too. 

Please do let me know if you liked this article and comment – I look forward to your feedback.

A PUNEKAR CYCLES DOWN MEMORY LANE

CYCLE TOWN PUNE – A Memoir bVIKRAM KARVE

When I was a small boy (in the 1960’s) – and later in the 1970’s  we used to cycle all over Pune. 

Pune was a Cycle-Town.

In the 1960’s – Poona (as Pune was called then)  was known as the Cycle Capital of India  since Pune had the maximum number of cycles.

But – with the advent and proliferation of scooters  this honour of Cycle Capital” was taken over by Delhi  and Pune became the Scooter Capital of India.

Let’s hark back to the 1960s – and talk about Cycle Town Pune

Those days 90% of the vehicles on the roads were Bicycles.

A few Scooters could be seen zipping by  and occasionally  an Ambassador or Fiat Car would appear on the roads.

Auto-rickshaws were beginning to make their appearance  and the PMT Bus was the second-most popular mode of transportation after the bicycle. 

If you do not believe me – you just watch the scene from the iconic Hindi Movie Sangam (1964)  where Raj Kapoor can be seen merrily cycling down Jangli Maharaj (JM) Road Pune (then known as 80 Feet Road – the widest road in Pune those days).

As I said – in those days  Pune was a cycle town

You just picked up your bicycle – and you went wherever you wanted to. 

Today – I dare not try to cycle on the roads of Pune  unless I want to land up in a hospital with my bones broken  or worse still  in the morgue  with my body crushed to pulp. 

There is just no place for the poor cyclist to cycle in the murderous traffic of Pune. 

In fact – in Pune – the only place you can cycle are on the cycle-lanes on those small stretches of the BRTS routes  which thankfully have still not been encroached upon (of course  even here  you risk being knocked down by a motorcyclist)  or you can pedal away on those obscure cycle-tracks which take you nowhere.

Those days  in the 1960’s and 1970’s  cycling was the primary means of transportation 

(I cycled a minimum of 20 kms everyday during my college days. This has given me strong legs and thighs) 

Nowadays – for most young Punekars  cycling is a hobby  a sport  a recreation  a “passion” – or – an “environment friendly” thing to do.

Those days  in the 1960’s and 1970’s  cycling was the primary means of transportation

That’s why today you have all types of fancy bikes (which cost the roof) – and snobbish people want to show off their cycles as “status symbols” whenever they get off their expensive limousines and take a rare bike ride wearing funny outfits and contraptions like gloves, helmets et al.

There are Terrain Bikes, Sports Bikes, BMX Bikes, Racing Bikes – all sorts of hybrid combinations  which look good  but are most uncomfortable to ride. 

Sometime ago – I took a long ride on a youngster’s fancy Mountain Terrain Bike (MTB) 

Since I was used to normal cycles (Roadsters) – I found the MTB uncomfortable to ride. 

And – after the ride I got such a pain in my you-know-where – that I thought I had got Hernia.

In my younger days – it was not “Snob Appeal  but it was “Utility Value that governed the Design of Bicycles

The predominant cycle those days was the “Roadster” (in bicycle parlance). 

The Roadster was a utility bicycle designed for practical transportation  unlike the fancy bikes of today which are primarily designed for recreation and for showing-off

The Roadster Bicycle was designed for Occupational Commuting  and it was designed to give you a comfortable ride. 

As I said earlier  those days  you did not ride a bike to burn calories.

A cycle was the primary means of transportation – and you commuted from one place to another on a cycle. 

Of course – fitness was a by-product. 

In my college days  I used to cycle about 20 Kilometres every day  breathing fresh unpolluted air – and this was healthy exercise. 

We cycled in our normal clothes  and not in “biking wear” – and that’s why the Roadster Design Bicycle had proper mudguards and chain guards to keep it clean. 

In addition to comfort  the qualities we looked for in a cycle were sturdiness, durability and endurance.

A cycle was a permanent long term acquisition – not a “use and throw” item. 

Well – if you go to Bicycle Shop today – you may not find the humble “Roadster” displayed along with those fancy fashionable bikes.

In fact – there is a proliferation of high-falutin Cycle Malls in Pune selling all sorts of fancy and expensive bicycles.

But if you look on the roads – you will see that the redoubtable Roadster is still going strong.

And – if you care to go to the mofussil – you will see that this humble Roadster Cycle is still the predominant mode of transportation. 

And – if you go to those good old cycle marts in Budhwar Peth in Pune  you will see that these unpretentious Roadster bikes are still selling in plenty.

When we were children – there were no “kiddie or children’s bikes to pamper us.

We learnt how to cycle the hard way on the hardy Adult Roadster Bikes – which entailed many falls and bruises  including one on my forehead  the scar of which is prominently visible even today. 

I learnt how to cycle when I was 7 years old. 

But – I got my first cycle in 1968  on my 12th Birthday. 

Until then – I used to hire a bike on an hourly basis from one of the many “Cycle Marts” that adorned almost every street corner of Pune  or manage a ride my uncle’s cycle whenever he was not using it.

The moment it was announced that I would be getting a bike as a birthday gift – I was very excited.

My friends and I started our market survey.

Which cycle did I want?

There were so many brands to choose from. 

At the top end was the matchless Humber – the prized crème de la crème brand from Raleigh Cycles. 

The Humber Men’s Roadster had a unique double-fork – a duplex fork design which had two tubes for absorbing shocks better  and a frictionless chain for a smooth ride.

Owing to all these refinements – the Humber Cycle gave you the ultimate in riding comfort. 

Now my Dad had given me a budget of Rs. 200 – and the Humber which cost around 400 bucks was out of the question  as were other premium brands of cycles like RaleighRudgeBuke and BSA

So 
– I had to choose from HerculesPhillipsHind SuperbHeroEastern StarAvon or Atlas – which were the popular bicycle brands those days

At first – I wanted to buy a Phillips Cycle which looked very handsome. 

Every Phillips Roadster bicycle had embossed on its badge its famous motto: 

“Renowned the World Over”. 

But the dealer insisted that I try the latest model of Atlas (which he claimed was sturdy and comfortable – and it had the best bearings  and the cycle was long lasting, economical and ideal for a student like me).

So I took a “test ride” – and I acquired an Atlas Cycle for the princely sum of One Hundred and Eighty Rupees (yes  Rs. 180 only).

I fitted my bike with a dynamo and light (for night riding) – a bell  a carrier  and a sleek stand  and a basket.

As I rode my brand new shining black Atlas cycle  I felt on top of the world.

Here is a picture of me and my large size 24 Atlas Cycle taken 51 years ago in 1968 (when I was barely 12 years old)

Vikram Karve with his Atlas Cycle (Circa 1968)

This Atlas Cycle rendered yeoman’s service (I told you that I said I cycled about 20 kilometers every day). 

My bicycle accompanied me all over on my cycling trips  including one touring UP and Bihar  where we just carried our cycles in the second class train compartment – and we got down wherever we wanted  and cycled away for our sightseeing  and caught a train again at the nearest station. 

No one dared to ask any questions  because we were “students”.

I used my rugged Atlas Cycle for over 15 years  and it was still going strong  when I gave it away to a needy student. 

(I was happy to see that this redoubtable bike was fully operational when I last saw it in the year 1998 – when the cycle was 30 years old)

Soon  I bought a brand new Hero Roadster Cycle for around three hundred bucks (Rs. 300 only)  which I used for cycling all around town  whenever I came to Pune on my weekend trips or holidays from Mumbai  where my ship was based. 

Though I had acquired a scooter by then  which I used for “family” outings  I still rode my bike for my solitary travels in Pune. 

Alas – my newly acquired wife refused to ride double-seat with me on my cycle – Ã  la Dev Anand and Mumtaz in the movie Tere Mere Sapne – though my wife had been an avid cyclist and she rode a Ladies Cycle herself in college. 

By the way  riding double-seat  and without a light at night  were traffic offences.

If a cop caught you without a light at night  or riding double-seat on your bike  he would deflate your tyres as punishment  and you would have to walk all the way dragging your cycle along. 

For parking your cycle – there was cycle-stands all over  in cinemas  at railway stations – in parks – everywhere.

Till the 1980’s – in Pune – the bicycle was still the most popular mode of transportation – since  in Pune  distances were not that much  and  the traffic was not that heavy. 

But gradually  scooters were slowly taking over  as people were increasingly in a hurry to get wherever they wanted to go.

I quit cycling in Pune sometime in the end 1980– because cycling had become increasingly unsafe.

The traffic situation in Pune had become quite bad.

Heavy vehicles, buses, cars and scooters ruled the roost.

And after a few close shaves in the dangerous traffic  I decided to stop cycling on the streets of Pune.

Cycling keeps you healthy. 

Cycling also keeps you stress-free.

Those days  as I cycled to college or work  the physical effort while cycling helped remove my stress  unlike driving a car or scooter in the chaotic traffic of Pune  which drives you crazy. 

Almost everyone cycled to school and college  and  to work and back  all the way from the heart of Pune City  even to far-off places like the factories in Khadki and beyond. 

Cycling was a healthy affordable way of commuting.

Yes  cycling was primarily a means of travel  and not a competitive sport or a means of working out for exercise as it is now. 

Of course  exercise was a byproduct of cycling. 

I have decided to relive those good old days. 

So I am going to get myself a cycle – not a fancy bike – but an a old-style standard roadster bike – maybe I will try out the good old tried and tested Hercules Roadster Cycle this time. 

The only problem is that I will have to find a safe road to cycle on  which is nigh impossible in Pune – or a Cycle Track on the side of a BRTS Road. 

(BRTS = Bus Rapid Transit System)

I eagerly await the removal of encroachments on the Cycle Tracks on the BRTS in Wakad – so all of us can cycle down the bicycle track – as people do on the BRTS route on Satara Road near Padmavati/Bibwewadi. 

I wonder how safe it is to cycle in other cities – and whether unencroached clear good cycle tracks are available for speedy and safe cycling...? 

If the Government is really keen on promoting cycling – Top Ministers/Politicians and Senior Officers should lead by example and cycle to work every day instead of commuting in cars. 

Schools must insist that Children Cycle to School on bicycles instead of travelling by Bus. 

Organisations must encourage their Employees (especially Senior Management) to use a bicycle to cycle to work instead of using vehicles. 

We see some VIPs/Celebrities merely paying “Lip Service” (for “Photo Ops”) once a year on World Bicycle Day and then using luxurious cars to commute to work throughout the year. 

As they say: Actions Speak Louder than Words. 

In the mornings and in the evenings  I watch the serpentine traffic moving at snail’s pace on the Wakad Hinjewadi Road towards the InfoTech Park. 

I wonder how different things would have been if everyone rode bicycles to work like in yesteryear Pune. 

We would have a more healthy, unpolluted and stress-free Pune.

Happy Cycling.

VIKRAM KARVE
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Friday, January 18, 2019

“Electro-Pollution” – Electromagnetic Interference, Compatibility and Hazards (EMI/ EMC/RADHAZ) – Reference Literature Survey

EMI / EMC (ELECTROMAGNETIC INTERFERENCE AND COMPATIBILITY)

RADHAZ BIOELECTROMAGNETICS and EMC 

Reference Literature Survey 
Three Book Reviews
By
VIKRAM KARVE

Hazards of Electromagnetic Radiation (EMR) to Human Beings and Living Organisms 

I have been invited to deliver a lecture on Electro-Magnetic Interference and Electro-Magnetic Compatibility abbreviated as EMI / EMC. 

I have decided to speak on the topic of Electromagnetic Pollution (or Electropollution) with specific focus on RADHAZ and Bioelectromagnetics.

This gives me a chance to brush up my rusty knowledge and let me begin by going through a few book reviews I had written earlier when I used to regularly teach this subject at the Post Graduate Level and conduct specialized training on EMI / EMC during my faculty days at IAT (later called DIAT Deemed University and MILIT) located in the hills of Girinagar near Pune.

So, Dear Reader, in case you are interested in this topic of Electromagnetic Pollution and its manifestations, do read on: 


Books Reviewed: 

1. Biological Effects of Microwaves by S Baranski and P Czerski 

2. Biological Effects of Electromagnetic Radiation by John M Osepchuk (Ed) 

3. EMC for Product Designers by Tim Williams

BOOK REVIEW No. 1 

Biological Effects of Microwaves by S Baranski and P Czerski
(A seminal reference book on Bioelectromagnetics and Electropollution Effects on Human Beings and Living Organisms)

Book Details 


Title: Biological Effects of Microwaves
Authors: S Baranski and P Czerski
Published by: Dowden, Hutchinson and Ross, Inc., StroudsburgPennsylvaniaU.S.A. (1976)
Pages: 234
ISBN: 0-87933-145-3

Book Review by Vikram Karve
               
Electromagnetic Radiations emanating from various communication systems and devices like Radio and TV broadcasting antennas, satellite communication, cell phone and mobile phone transmitters and transmission towers, microwave ovens and electrical and electronic appliances have now become an unavoidable area of our life. 

Today, especially in modern urban life, we are surrounded by electromagnetic radiation.

Microwaves constitute a significant part of electromagnetic radiations and contribute to “electro-pollution” as research indicates that microwaves affect living organisms. 

The book ‘Biological Effects of Microwaves’ by S. Baranski and P. Czerski presents the detailed research work done in this field and is one of the earliest books on the subject.  

It will prove helpful for the biologists, physicians, physicists as well as budding and practicing electronic and electrical engineers.

The content of the book is organized in seven chapters.

Chapter number one is the ‘introduction’ with the subject. 

At the beginning of this chapter the authors make our concepts clear about the important terms like microwave radiation, ionizing radiation, non ionizing radiation and radio-protection

Before dealing with the microwaves we must know about the electromagnetic radiation spectrum.

There are figures, illustrations and tables describing the electromagnetic radiation spectrum, the wavelengths (cm), energy (eV) of different waves like radio-frequencies  microwaves, visible light, UltraViolet Rays, X rays and Gamma rays and explaining some examples of typical uses of equipment generating radio-frequency and microwave radiation.

This chapter explains the uses of different ranges of frequencies, their respective applications, their occupational exposure and some examples of potential exposure (i.e. general population hazards). 

This chapter also explains the theory and working of various microwave transmitter valves such as magnetron, klystron – Reflex Klystron and multi-cavity Klystron and Travelling Wave Tube  (TWT) briefly with their schematic representations.

The second chapter is about the ‘Physical Characteristics of Microwaves’. 

This chapter is designed in such a fashion that the reader who wants to enter in this field but have forgotten some of the basic concepts of physics related to the microwaves. 

This chapter is important and helpful to grasp the further concepts. 

It includes the basic phenomenon of formation of electromagnetic wave, set of parameters that characterize the electromagnetic waves such as frequency, velocity, wavelength, Electric and magnetic field vectors, relation between the two and the characteristic impedance. 

Coaxial transmission line, coaxial cable and wave guide are also explained to understand how the waves are propagated.

After getting introduced with the microwaves and going through their physical characteristics, in the third chapter we study the interaction of microwaves with the living systems. 

Biologists and physicians studied the interaction of microwaves with the living systems and they came to the result which had three phenomena like penetration of microwaves into a biological target and their propagation within it, secondly the primary interaction of microwaves with living matter and the secondary effects induced by the primary interaction. 

The three layered semi-infinite slab model of a biological target (which is made up of skin, fat and muscle) illuminated by simple wave front is explained and may be used for solving various problems relative to the medical use of shortwave and microwave diathermy. 

In the later subsections primary and secondary effects of microwave interaction are studied. 

There are illustrations of the primary and secondary effects of microwaves on different levels of organizations ranging from molecular level to highly organized living systems.

The fourth and the most praiseworthy chapter of this book is titled ‘Biological effects of Microwaves (Experimental Data)’. 

It presents the collection data found in literature on experimental facts and observations on biological effects of microwaves. 

Various results of experiments done on different animals like mice, dog, rats, guinea pigs and cat are illustrated. 

Effects of microwaves on nervous system, cardiovascular effects, effects on endocrine and metabolic effects, effects on genital system, foetal development, chromosomal effects, possible genetic effects and cellular effects, effects on internal organs like abdominal cavity, chest and digestive track, effects on blood and the blood forming system, cataractogenesis are presented with experimental details. 

In the last section of the chapter some comments on experimental studies on the interaction of microwaves with living systems are done which are very useful while doing such experiments.

Chapter Five is about the ‘health status of personnel occupationally exposed to microwaves and the symptoms of microwave overexposure’. 

In this chapter the outcome experiments and conclusions of literature survey of various authors are given. At the end of the chapter the main points which are the outcome of all the survey of the literature are collected.

Microwaves are the boon for the mankind and improve our quality of  life in so many ways and it is prudent to be aware of the hazards and adopt safety standards to protect ourselves as well as the environment form the adverse effects of microwaves. 

Chapter Six is about the ‘Safe exposure limits and prevention of health hazards’ with analysis on the safe exposure limits of microwaves. 

The basic principles which may be used while determining the safe exposure limits are elucidated. 

At the end of the chapter suggestions for prevention of health hazards are given which are very much important while dealing with the microwaves.

The seventh and last chapter of the book summarizes the work presented in the previous chapters and the important developments in the field till the writing of this book. 

The authors suggest integrated coordinated interdisciplinary efforts of biologists, physicians, physicists and electronic engineers. 

The authors have done extensive literature survey for this book and cite more than 600 references which may prove helpful for the reader for further studies in this subject. 

This book was published 43 years ago in 1976. 

Though not a recent publication, this book is a seminal work and an important book of reference literature in the area of Bioelectromagnetics and will prove useful for those who are doing research in this field.

BOOK REVIEW No. 2 

Biological Effects of Electromagnetic Radiation by John M Osepchuk (Ed)

Details of the Reference Book/Journal

TITLE: BIOLOGICAL EFFECTS OF ELECTROMAGNETIC RADIATION 
AUTHOR:  JOHN M OSEPCHUK (Ed)
PUBLISHER: IEEE PRESS, NEW YORK 1983 

Book Review 

This book is a collection of scientific and technical research papers of the IEEE, collected by efforts of Committee of Man and Radiation (COMAR) and is very useful for the study of Biological Effects of Electromagnetic Radiation. 

The book helps to understand the bottom-line results and also some of the reports which have greatly influenced this field of research and its practical relevance. 

(The Editor of this volume, John M Osepchuk was a consulting scientist at Raytheon Company Lexington, Massachusetts from 1950.  He received B.A. and M.A. degrees in Engineering Science and Applied Physics and a Ph.D. in Applied Physics, all from Harvard University)

The papers are presented in seven separate parts with associated references. 

The book also focuses about measures like Specific Absorption Rates (SAR), exposure on people, susceptibility standards for electronic devices to be implanted into people and beneficial medical applications of Electromagnetic Radiations. 

Some research papers also show the tests and experiments done on different animals (mammals) to demonstrate the hazards effects, and uses of electromagnetic radiations.

The book comprises of seven parts. 

Every part is compiled by various editors to cover the broad aspects of the topic by collecting different technical papers. 

A brief review on various topics is covered on subsequent paragraphs.

The first part deals with relationship between the properties of the exposure fields and the absorbed energy (rate of energy absorption) or fields in the exposed tissues. HP Schwan and GM Piersol brought out with their review to evaluate the biophysical mechanisms by which electromagnetic radiation is absorbed in tissue, and its medical applications. 

The next paper reveals the effects of temperature distribution over tissues when exposed to different kinds of radiation sources. EL Hunt, RD Phillips, DM Fleming, RD Castro have demonstrated a dosimetry system which measures the heat generated by “carcass” (dead and burnt body of an animal) thereby measuring electromagnetic wave exposure. 

The next paper states the heating patterns of cranial (skull) structure in microwave pattern. There are several problems associated with the electromagnetic wave propagation effects in living organisms. The low frequencies also now known for harmful effects due to long time exposure such as behavioral changes, burns, cataracts, etc in animal tissues. 

Further going ahead, the next paper by Habib Massoudi, Carl H Durney, and Curtis C Johnson shows the calculations of the power absorbed by an ellipsoidal model of man are given for six different orientations of the ellipsoid with respect to the incident plane wave field vectors. The results show that the induced fields and the absorbed power in the ellipsoid are strong functions of frequency, size, and orientation with respect to the incident field vectors. However, the syndicates of this paper have determined a formula that is an approximate numerical method of curve fitting to find the average specific absorption rate (SAR) over a broad frequency range. Now that we know that mammals are largely affected by microwaves, there was a requirement of measurement of these exposures, the paper by Ronald R Bowman suggests a thermistor probe and a very high resistance plastic leads to measure the RF frequency exposure. 

The last paper of this part by Om P Gandhi states electromagnetic dose for different parts of man and animals at various incident frequencies with the change in orientations of body. A typical sketch of human body is shown to illustrate the distribution of power deposition for an average specific absorption rate.

The second part brings about the various approaches on the biophysical interactions of the RF fields. 

The first paper by W Ross Adey illustrates that the nervous exhibits a rhythmic electrical activities, a set of electrical signals when we do different daily activity, even in different moods. The Electroencephalogram (EEG) measures such kind of electrical signals. Thus, brain cells also sense field potentials, which bring changes in the behavior. 

The next paper by SA Moskalenko, MF Miglei, PI Khaoshi, EP Pokatilov and ES Kiselyova states that a biological system is considered as a macroscopic model consisting of separate units which oscillate with different frequencies due to the interaction among themselves and form a set of electric dipole oscillators. There is an individual finite group of modes among these units they are called active phonons. Now if the energy is supplied to these phonons, change in frequency is observed, this is probably responsible for growth control of tissues or enzyme activities and even leads cancer. 

In next paper, Robert H Cole has presented a progressing report paper on mathematical interpretation of dielectric theory for the changes in DNA solution. The DNA structure is also represented by Watson Crick Helix. 

The subsequent paper show that change in energy of the biomolecules leads to the change in the enzyme activities and the analogy of the biophysical and biochemical processes in neuroscience with the electrochemical reactions.

The third part focuses on the thorough study of effects of the Radio Fields on the central nervous system and behavior. In the first paper by Chung Kwang Chou and Arthur William Guy, they have tried to find out the part of skull which determines the RF frequency, whether it is affected by the polarization of electric field, and the change in auditory response by using guinea pigs and cats and thus finding the analogy in the human body. The next paper brings about the threshold of the sensitization to microwaves in rats. The paper by James C Lin, Arthur W Guy and Lynn R Caldwell shows the operant responses of the rat carcasses (Skull) at various radiation strengths. The subsequent papers bring out the changes in behavior, dosimetry and stimuli in auditory responses on exposure to microwave.

The fourth part deals with the study on effects of microwave exposure which leads to temperature rise and causing pathology changes in animal body. 

The first paper shows the experiments on rats, rabbits and dogs on exposure to microwave thermal effects followed by cooling and the effects on eyes and testis thus, concluding the effects of the same on human body. 

The subsequent papers show the study of effects on endocrine, thyroid, pituitary changes due to exposure of microwaves of different energy and different exposure duration. The occurrence of vasodilation responses at various temperatures on exposure to microwaves is of significant emphasis in skin areas. The thermoregulatory responses on exposure to microwave post infrared exposure produce no changes in behavior. The immunity towards microwave exposure of 2450 MHz radiation for various duration are achieved by the body by lymphoid cells. Effects of microwave exposure on rabbits eye at frequencies of 2.45 to 10 GHz leads to opacity (cataract). 

A very significant study paper by Charles I Barron and Albert A Baraff shows how microwave exposures of radar effects heart, kidneys, liver, gastrointestinal and hemoarrhagic changes in respiratory system in animals and human body. 

Another paper by Charlotte Silverman reviews a study on Tri-services personnel occupationally exposed to radars causing nervous and behavioral effects, congenital anomalies, cancer etc. 

The last paper of this part by SM Michaelson shows the study of hazards associated with the development, association, operation and maintenance of radars and other radio-frequency emitting equipment on various body organs, tissues, and enzyme system on various power levels.

The fifth part reflects exposure, emission, susceptibility and medicine in diathermy, hyperthermia and diagnostic techniques on microwaves. 

The first paper illustrates the effect of deep tissue heating, and its applications. 

The next paper by JG Short and PF Turner states application of hyperthermic treatments as a choice of treatments or combination of other treatments on tumors based on their locations. 

The subsequent papers emphasize more on application of microwave radiations as a method of imaging techniques of kidneys, thermography as a means of detecting breast cancer by change in temperature of body tissues emitting thermal radiations, microwave applications in measuring neurochemical parameters, use of microwaves in thawing (upbringing to unfrozen state).

The sixth part is published with the articles covering on safety standards, the history and present state of potential hazards and microwave safety standards. The subsequent papers also put an emphasis on Biological effects and Dosimetric data for development of radio frequency safety. The data based on various RF emissions through equipment and places is also covered in the article.

The seventh part of the book covers the hazards of cardiac pacemakers due to electromagnetic interference and emission of radio frequency radiation. Other articles cover electromagnetic interference of pacemakers in dental environment by using pulse generator of various manufacturing companies.

This volume clearly brings out with various case studies, experiments, applications and illustrations on the Biological effects of Electromagnetic Radiations. 

The facts and figures help the reader to understand the functions of various systems designed and published in the articles in a simple way. 

However, the reader needs to have the requisite proficiency in electrical engineering and electromagnetic theory, mathematics, science and instrumentation and be conversant with relevant terminologies in order to better understand the effects of microwave and EM radiations on human beings and animals. 

Though published 36 years ago, this volume is a useful milestone reference book for those who want to delve into this fascination area of study. 

BOOK REVIEW No. 3 

EMC for Product Designers by Tim Williams

Book Review by VIKRAM KARVE

A Comprehensive Reference Book for Information Technology, Computer Science, Electronic, Communication and Electrical Engineering Professionals

THE BOOK

Title: EMC for Product Designers
Author: Tim Williams
Elsevier [Fourth Edition, 2007] 498 pages
ISBN – 13: 978-0-75-068170-4
ISBN – 10: 0-750-68170-5

BOOK REVIEW 

Most of us consider a number of factors, exoteric and esoteric, while designing or selecting our homes and in the configuration of the numerous modern technological devices and domestic appliances, most of them electrical and electronic, especially in location of various rooms and in deciding where to place these appliances.

Sometime ago I saw a programme on TV where a Vastu Shastra expert was advising viewers not only regarding the various aspects of designing and building living environments that are in harmony with the physical and metaphysical forces but also specifying optimal locations and layouts for various electrical and electronic appliances and devices in both residential homes and workplaces.

I listened with intriguing interest as he gave precise directions and specified exact locations for positioning of Televisions, Computers, Communication Devices, Microwave Ovens, Music systems and other appliances, and fascinated by the congruence between principles and aspects of Vastu and Electromagnetic Compatibility (EMC) and wondered whether the expert in reality was actually an EMC Design Engineer in addition to being a Vastu Shastra Specialist.

When you design or select or configure your house or office I am sure you consider various aesthetic, architectural, financial, utilitarian, geographical, interior and exterior design and other practical aspects, maybe even incorporate the principles of Vastu Shastra and Feng Shui etc.

But do you give even a fleeting consideration to Electromagnetic Compatibility (EMC)...?

In today’s world with the increasing use of electrical, communication, electronic and information technologies we are under continual exposure to Electromagnetic Field (EMF), both inside and outside our homes, in our workplaces and even in the open wherever we go, radiating from radiating from electricity power lines, household wiring, microwave ovens, computers, monitors, televisions, communication devices, cellular phones, electrical, electronic and IT appliances.

“Electro-pollution” is an increasingly serious form of Environment Pollution and merits serious consideration, as much as, if not more than, other well-known forms of pollution.

Electro-pollution seems to be omnipresent. 

Apart from hazards to our health, Electromagnetic Interference (EMI) is detrimental to the proper functioning of most electrical, electronic, IT, ITES, ICT, communication and technology-based systems and may cause malfunctions and even potentially disastrous and fatal accidents.

The book being reviewed – EMC for Product Designers by Tim Williams – is one of the most comprehensive reference books I have read on the subject of the Design Management aspects of Electromagnetic Interference and Electromagnetic Compatibility [EMI / EMC].

The book comprises sixteen chapters arranged in three parts:

1. Legislation and Standards

2. Testing

3. Design

The author lucidly covers most micro and macro aspects of EMC Management in meticulous detail.

The logical sequence of topics, clear diagrams, tables and illustrations facilitate easy understanding of this complicated subject.

The Design Checklist, interesting Case Studies and useful mathematical formulae in the appendices and the extensive bibliography add value to this reference book.

Whilst the earlier chapters provide an excellent understanding of the EMC Standards and the basic theoretical principles of EMI / EMC, the “meat” of the book lies in the chapters on Systems EMC and EMC Management which encapsulate all relevant facets of EMC in a holistic manner.

I wish the author had included a detailed chapter on Electromagnetic Health Hazards and mitigation techniques. 

Electromagnetic Pollution (Electropollution) the most vital topic concerning all human beings seems to have not been accorded the due importance it deserves and I hope the author presents a more holistic and systemic view of EMC and includes a comprehensive chapter on pertinent aspects of Bio-electromagnetics, Thermal and Athermal EMR Hazards and their mitigation in the next edition.

I recommend this book – it is an excellent reference book for Electrical, Electronic, Telecommunication and IT Engineers and Managers, Designers, Students and practicing professionals in the field of EMI/EMC and a useful addition for all engineering and technical libraries. 

Three Book Reviews (EMI/EMC/RADHAZ) by VIKRAM KARVE 

VIKRAM KARVE
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