The tendency of some particles to act like matter in public and like waves of energy when no one's looking may be a problem in the way physicists study particles, not the way particles behave.

Is it possible to rephrase the uncertainty principle as follow

"we can't see all the characteristics of a particle at one time, every time we look at a quantum particle we must be seeing only a subset of the things about it we would like to see.

If the list of characteristics we can see changes more than we realize,we may see particles doing things that are impossible simply because we haven't realized the information we see about it has changed from one observation to the next."

The Heisenberg’s uncertainty principle states that there is a fundamental limit to the accuracy with which the position and momentum of a particle can simultaneously be known or jointly measured. Position and momentum are called complementary variables and there are other complementary pair of variable that exists for any quantum particle.

The Heisenberg's Indeterminacy Equation is given by ΔpΔx ≥ ℏ/2 (where ℏ=h/2π). The limit of accuracy ℏ/2 is also called as the constraining constant which is an experimentally determined constant. With more accurate experimental procedures this value is subject to change.

Solar sails (also called light sails or photon sails) are a method of spacecraft propulsion. Solar sails can achieve upto 10% the speed of light, which is ~30000 km/s. The conservation of what fundamental physics principle is behind the technology of solar sails?

Large objects can move with great momentum. Why then is it difficult to see their wave-like nature?

Light has no mass so it also has no energy according to Einstein.

To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its

Which of the following experiment suggested the wave nature of electrons?

Particles whose motions are better described by quantum mechanics can only gain or lose energy in discrete units called

Which of the following standing waves has the MOST energy if the radius of all the orbits are the same?

For atoms these single-electron wave-functions represented by Schrodinger wave equations are called

atomic orbitals. However It is currently impossible to solve the Schrodinger equation exactly for atoms with more than one electron (e.g. atoms like H, He, and so on).

If a protons and an alpha particle have the same de-Broglie wavelength. What is same for both of them ?

Which of the following statement is correct?

The intensity of a monochromatic light source is increased. Which of the following is correct?

True or False? Two waves cannot exist in the same space or in the same medium at the same time.

During bond formation, atomic orbitals (waves) interfere with each other to create molecular orbitals. Molecular orbitals are also wavefunctions

How do you feel about the general level of competition in these quizzes?

Would you prefer the Sunday live quiz to be held only every two weeks?