The physical-constants tag has no wiki summary.
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Contact electricity and photoelectric effect
Most universities provide an experiment about the photoelectric effect to determine $h$ by measuring the stop voltage against the light frequency and calculating the slope $h/e$.
But mostly they also ...
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Why there can't be infinitely small existing?
Why there can't be infinitely small existing?
I am not suggesting it can or cannot. I am asking can there be an absolute or reasonable answer to that question.
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Has unnaturalness motivated new ideas in physics?
The cosmological constant problem arises because the natural scale of the cosmological constant is $10^{120}$ times larger than what we observe. This implies that the dimensionless constant is much ...
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How many physical constants should there be?
I see there are different accounts on the number of physical constants. Is there any theory predicting what the number of physical constants is? I agree there should be at least one but I have no ...
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Viscoelastic materials parameters values
I am taking part of a theoretical research about viscoelastic material, in particular related to the Kelvin-Voigt model.
For some numerical simulation we need the values of the Lamé elastic and ...
