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the sound each glass makes
the sound
the sound each glass makes
Just skip the glasses and drink straight from the bottle.
Churchill was known to wear a small brown pair of circular reading glasses, but did not wear them on a daily basis.
Depending on the experiment, the shape of the glass, its thickness, the amount of liquid in it.
Wear a protect suit, eye glasses, glove.
Prescription glasses generally do not provide sufficient eye protection, particularly on the sides. There are several styles of laboratory eye protection that are designed to fit over prescription glasses; you should wear the prescription glasses and safety glasses or safety goggles as well. It's also possible to buy prescription safety glasses, but they're fairly expensive. Again: Ordinary prescription glasses are not a substitute for safety glasses/goggles.
Two Switch the second full glass with the second empty glass. =)
If you mean look straight into the aperture then yes.
but how did you get it
Because If they don't, the scientists won't know what the difference is in.Example:You have two glasses of water. One is labeled control.The other is labeled salt. The one labeled controlhas nothing added to it. The one labeled salt has salt added to it. Is there a difference between the two glasses?If an experiment has a control in it, that means the scientist needs to know if there is a difference in the experiment.