Which is the sound wave that is below the human hearing?
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Why ”quantum physics” is named as it is? : quantum physics
Why does the specific gravity of milk increase, when cream is removed from the milk ?
How fast can a shadow move ? If a moth fly's in front of a very bright room temperature light powerful enough to light up Saturn like the sun could it's shadow move faster then light if there was no light diffusion.
Why is diamond cut to make if brilliant ?
Can a huge amount can be saved in a capacitor
What is Electromagnet?
What is the Spectrum?
What is Pressure ?
What is ion pair energy?
who described the theory of ionization?
Why do stars twinkle? Why do planets not twinkle?
What is supersonic?