All 4 Al-Razi students went to Physics laboratory. The experiment was to identify gas pressure by using simple barometer. The simple barometer used mercury.
I am very excited cause to I touch the mercury. However, my teacher allowed me to touch it. I felt like a jelly and not hot and not cool. After that, I met my friends and told I touched the mercury. However my friends told me that mercury will diffuse into the body and then will transfer to brain by blood capillary. It will cause to the serious disease that related to brain is known that "Parkinson".
Give your comment if you know about mercury and parkinson.