a thermometer or your skin.
We use hot water because in order to make coffee or tea you have to use hot water. Hot water is the beginning source of how you create tea and coffee. Also we use water as water is clear and you can see if something has a chemical reaction you couldn't see it as well if it was coffee or tea Hope this helped x
something you use to gather evidence that you cant see.
no, in fact snakes do not have ears. they use a special thermal sense from th tips of their nose. they see by how hot something is, kinda like zombies lol
When you want something heated not too hot.
Some toys use cold and others use hot but what i would do is look and see what it uses. But i usually use warm water.
Cold weather - Bali is hot day and night.
No, use WD-40 or something similar to.
A thermometer works well for that.
microscope....varun
electroscope
an Electroscope
like this: You will detract your hand if it touches something hot. LOL