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The photoelectric effect is the emission of electrons from the surface of a metal due to exposure of electromagnetic radiation above a certain frequency.
Photon energy (E=hf or E=hc/λ).
The work...

Matter and antimatter will annihilate if they meet:
1) Particle meets antiparticle.
2) Both have rest energies due to their masses.
3) Both have kinetic energies due to their movement (i...

The Strong Nuclear Force keeps protons and neutrons together in the nucleus.Its range is no more than about 3-4 fentometres.
It has equal effects between a proton-neutron, neutron-neutron and proton-...

Type of programming that concerns the use of objects based on classes. Classes consist of methods and data structures and are available to all subclasses and objects based on the parent class. Objects and...

Local variables are defined within a subroutine. Their scope/visibility ends when the cursor leaves the subroutine.
Global variables on the other hand are variables that exist outside of all the subr...