Re: Unsafe High School Science Project

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

>Date: Fri, 14 Apr 2000 22:45:39 +0530 (IST)
>From: "Dr.K.S. Parthasarathy" <aerb@soochak.ncst.ernet.in>
>
>During my years at the university we had an old improvised x-ray unit. Our
>science teacher used to demonstrate the presence of x-rays by passing the
>unsteady, flickering x-ray beam through a box of weights kept in between a
>fluoroscent screen and the x-ray unit. One day, when the teacher was away
>I removed the box of weight and passed the x-ray beam  through my palm. My
>bones were very feebly visible, if we looked for them.
> After nearly seven years when I spoke about the experiment to a senior
>colleague he said that he had placed his hand in an almost identical way
>once every hr or during an 8-hr day for three days during a
>school exhibition. Surprisingly he did not develop any blisters!!
>
>K.s.parthasarathy
>
>========================================================================
>Atomic Energy Regulatory Board,
>Niyamak Bhavan, Anushaktinagar,
>Bombay - 400 094. INDIA
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