Letter to Dr Hon with regards to a radio frequency campus for Hwa Chong Institution

pigsabusiveΗλεκτρονική - Συσκευές

29 Νοε 2013 (πριν από 4 χρόνια και 6 μήνες)

194 εμφανίσεις

Letter to Dr Hon with regards to a radio frequency campus for Hwa Chong Institution

Joshua Foo (4s205), Ryan Wong (4s231)

Dear Dr Hon,

We are
a group of students representing the High School Council
, and we are writing this in
response to your plan of revamping Hwa Chong Institution to become a radio frequency campus
. We
acknowledge the plentiful benefits such a system could bring, but we also acknowledge the
possibility of side effects detrimental t
o our health. However, we still support the idea of a radio
frequency campus because research has been

done to debunk the myth that exposure to radio
frequencies increases risks of diseases
brought about by

mutations, such as cancer.

First and foremost, w
e need to identify what radio frequency is.

Radio frequency refers to
alternating current (AC) having characteristics such that, if the current is input to an antenna, an
electromagnetic (EM) field is generated suitable for wireless broadcasting or communi
cations. This
EM field is known as an RF field or radiowave, and will be the focus of discussion.

Many types of wireless devices make use of RF fields, such as cordless and cellular
telephones, heat sealers, vinyl welders, high frequency welders, inductio
n heaters, flow solder
machines, microwave drying equipment, radio and television broadcast stations, satellite
communications systems, and two
way radio services.

All these appliances expose the users to the
radio frequencies, and have arose much concern
on whether or not such exposure could lead to
detrimental health effects.

In our school’s case, the technology to be implemented is radio frequency identification
(RFID). Similar to the abovementioned applications, fields of radio frequency are generated.
However in this case, because the school compound is so large, a relatively larger field has to be
generated. After implementation, this system would bring about much convenience

attendance of
students are automated and accurate, and locations of student
s can be tracked to ensure no
students are absent without reason or leaves the school compound before dismissal time, a rampant
issue in many schools. Of course, these are just a few of many other benefits.

The system of RFID has already been implemented i
n many places. School authorities in the
Japanese city of Osaka are now chipping children's clothing, backpacks, and student IDs in a primary
school. A school in Doncaster, England is piloting a monitoring system designed to keep tabs on
pupils by tracking

radio chips in their uniforms. St Charles Sixth Form College in West London,
England, started September, 2008, is using an RFID card system to check in and out of the main gate,
to both track attendance and prevent unauthorized entrance. Whitcliffe Mount
School in
Cleckheaton, England also uses RFID to track pupils and staff in and out of the building via specially
designed cards. In the
Philippines, some schools already use RFID in IDs for borrowing books. Gates
in those particular schools also have RFID
ID scanners for buying items at a school shop and canteen,
library and also to sign in and sign out for student and teacher's attendance. Why is the RFID system
so popular? Simply because

it has
proven effective and convenient.

There have been studies car
ried out to investigate the potential health effects brought
about by exposure of radio frequencies. However, i
nterpretation of studies of potential health
effects is controversial. There exists a spectrum of opinion within the scientific community and

Evidence of effects associated with EMF exposure, derived principally from
epidemiological studies and from some experimental studies, have

insufficient scientific data to
either make a conclusive judgment on causality or to quantify appropriate exposure restrictions.

On one hand, we have a group of
researchers claiming
their studies have proven that
exposure to radio frequencies bring about
detrimental health effects. Yet on the other hand, we
have other groups of researchers saying otherwise. Such inconsistency
leads us to wonder whether
or not exposure

to radio frequencies do bring about har
m to our bodies.

In fact
, most research has show
n that exposure to radio frequencies do not cause harm to
our bodies.

Much experimentation has already been carried out to investigate how our bodies are
affected by exposure

to radio frequencies;
experiments have
been carried out using a large
range of
, and effects have been investigated not on the body as a whole but specifically each and
every part of the body

brain, lungs, heart, sex organs etc. All these meticulous work


common conclusion:
exposure to radio
frequencies do not
e harm to the body.

So what about scientific claims
that radio frequencies
exposure do bring about detrimental
The thing is, many of these claims were made a long time ago, when
technology impaired their research, and thus their

Such an example is the claim that low
exposure to radio frequency electromagnetic fields may alter the permeability of the blood
brain barrier (BBB) and cause leakage of molecules from the blood into the cerebrospinal fluid. The
barrier is basically a membrane that protects the brain from potentially harmful

compounds and helps to regulate and control the fluid environment of the brain cells.

When harmful
compounds enter the cerebrospinal fluid, the person could be impaired foreve
r, or die. However,
this claim was made more than 20 years ago, and better controlled studies carried out recently have
failed to replicate these findings

There are other effects on the body, such as the thermal effects inflicted on the body upon

of radio frequencies. High intensities of radio frequencies could increase body temperature,
and this in turn could bring about several effects such as
temporary impotency
. This is because
sperms are unable to live well at body temperature, and that is wh
y testicles are hung outside the
body where temperatures are lower.

Heating by just 3
C could already reduce sperm count
drastically. However, we do have to note that these effects are

and n
ot long
adverse effects.

Therefore, they are n
ot much of a cause for worry.

Upon much analysis, we have
decided to support the transformation of the school into a
radio frequency school
, because
not only does it bring about so many benefits
, but it
also brings
about little side

with those sid
effects that it causes being short

Hence, my g
fully supports your plan for a radio frequency school.

With regards,

Joshua Foo (4s205)

Ryan Wong (4s231)

P.S. We ensure you that our evidences are reliable and not falsified. Here is the list o
f our references:

[1] Wikipedia. Available online at:


] TechTarget (2007). Radio Frequency. Available online at:

Brain, Marshall (2000).
How Radio Works
Available online at:


Brain, Marshall (2000).
How Oscillators Work
Available online at:

[5] OSHA (2010). Radiofrequency and Microwave Radiation Health Effects. Available online at:

Jo Best (2004).
Schoolchildren to be RFID
. Available online at:

[7] Chris Williams (2007).
Schoolkid chipping trial 'a success'
. Available online at:

[8] AIM.
Technologies: RFID / What is RFID?

Available online at:

[9] RFID Journal. ‘What is RFID?’ Available onl
ine at:


Stan Gibilisco (2002).
Physics Demystified
. McGraw
Hill. p

474. ISBN


] Health Protection
Agency (2004).
Review of the Scientific Evidence for Limiting Exposure to
Electromagnetic Fields (0

300 GHz)
Documents of the NRPB

] Phil Kamlarz (2006). Radio Frequency Exposure and Potential Health Effects.

Heynick LN, Johnsto
n SA, Mason PA


Radio frequency electromagnetic fields: cancer,
mutagenesis, and genetoxicity.
Suppl 6:S74