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all atoms contain the same particle that produces the ray.
Pulley can prove that simple machine changes the direction of effort.
He proved that atoms are not full of a positive material but mainly open space.
Actually, it has been proved that light is bent by gravity, so it is impossible to prove that light travels in a straight line.
You have different kinds of methods for doing the a simple experiment in science. You need a prediction materials Observation Procedure and hypothesis for the experiment you do. 1st you make a prediction gather all the materials for your experiment and you start follow the experiment and last but not the least you have to check your hypothesis and prove it.........
check the pH, there are many methods for this. simple pH paper or probes. Or you could titrate
it explains d wave nature of light.
Miller and Urey
An experiment can prove or disprove a hypothesis.
Science does not " prove " things! The experiment gave us some evidence that it was possible under certain conditions and with the addition of energy that many biomolecules could be formed from common gasses.
Prove causation
Experiment
That depends on the result of the experiment. The experiment is a way to test a hypothesis, and it's completely fine if the experiment disproves the hypothesis. Ideally, though, the experiment will support the hypothesis.
Galileo
to prove it worked.
An experiment can prove they are wrong or right ...:)