A proof of principle experiment is one designed to see if the idea is workable. Usually little if any data is collected. Example: " I wonder what happens if I push this button?" Better example: " Can energy be generated by wind?" To do a proof of principle experiment, it would only be necessary to generate "some" energy from "some" wind by "some" method. It would not be necessary to collect data or decide the practicality of a particular method.
A heat proof mat is used in science when doing an experiment with fire or hot liquids. It is to protect the surface that the experiment is being made on
Causation
For instance, if you wanted to experiment on plant a, plant b, and plant c. You would put plant c to one side, treat it like a normal plant (water, feed, etc.) and call that the control. You could then experiment on plant a and plant b - feeding them differing fertilisers, allowing pests to attack the plants, and so on. At the end of the experiment, you could compare the growth of plant a and plant b to the control plant c. Though plants are mentioned above, the principle relates to any experiment - you need a control to compare against the end results of the experiment.
Data are either the results of experiment express in the measure form of numbers, or those numbers under some conditions of statistical analysis.
experiment
resonanace...
An experiment gives us proof that we are right.
The proof of theory
Any proof?
What are some precautions and source of error in the principle of moments
resonance
The edible pea experiment to formulate his basic principle of heredity
Test; proof; experiment.
Evidence is proof of your hypothesis.
Electron diffraction.
Anything that has to do with physics on the planet Earth
total energy IS CONSERVED and the principle of conservation of energy does hold