what a scientist wear when his doing an expirement?

Answer 1

It really depends on the experiment.
Safety goggles and close-toed shoes are fairly standard, though. -Pathologists, chemists, microbiologists, geneticists, and other lab-working folk.
I mean, my herpatologist friends generally wear shorts and a t-shirt, or snake-proof gaiters.
Physicists might wear ruby tinted goggles and hard hats. Or earplugs. Or lead-lined jumpsuits. It's hard to tell with physicists... they're a bit odd.

Answer 2

I'm a biochemist, and I would say virtually all the time a t-shirt, jeans, and usually gloves. Lots of latex or nitrile disposable gloves, and we change them as frequently as seems reasonable--several times a day.

I haven't worn a labcoat or safety goggles in years--you need them if you are working with dangerous biological fluids or organisms, dangerous chemicals, or things that might explode. Another example is very radioactive samples, which is where I last remember using a labcoat quite a few years ago. Some people wear labcoats if they are afraid of spilling something and damaging their clothes.

Oh, you do need goggles when you are using uv lights/lamps--usually just for a few seconds.

What we can't wear are shorts, open toed shoes, sandals, flip flops, etc.

In theory we're supposed to wear our lab coats more frequently than every 5 or 10 years.
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Answer 3

Jeans and a t-shirt. All my experiments are done either running a telescope over the internet or modeling stuff on my computer.

Answer 4

Clothes. Ask Dr Science,he knows more than you do.

http://www.peopleagainstnakedscientists.com

Answer 5

A lab coat, gloves, and maybe eye protection.