Search:
(clear)

b
 Bohr atom
Even though it’s now considered obsolete, Niels Bohr took a huge step forward in quantum physics, when in 1913, he proposed(...)  Read More

c
 complex number
This is an example of a complex number: 3 + 4i. It means take 3 and add 4 times i. The letter i is the symbol for the square(...)  Read More
 conservation laws
Physics includes several conservation laws. The most wellknown is the Law of Conservation of Energy. This law states that(...)  Read More
 conservation of energy
The Law of Conservation of Energy says that in our universe the amount of energy remains constant. Energy cannot be created(...)  Read More
 conservation of matter
The Law of Conservation of Matter was abandoned as inaccurate by physicists early in the 1900’s. For more information, see(...)  Read More
 conserved quantity
A conserved quantity is something that remains constant in amount over time and cannot be created nor destroyed. Conserved(...)  Read More
 constant
A constant is a number or symbol that always has the same value. There are four types of constants:
A mathematical(...)  Read More
 constant of nature
A constant of nature is another way of saying a "physical constant."  Read More
 Coulomb's Law
Coulomb’s Law is a formula that allows us to calculate the electric force generated between two electrical charges.(...)  Read More

d
 dark energy
Dark energy is the name given to an unexplained aspect of the universe. Dark energy has been postulated as an explanation(...)  Read More
 dark matter
"Dark matter" is a name that’s been given to a substance which many scientists believe may exist. If it exists, this(...)  Read More
 decoherence
(Also called “quantum decoherence.”) Decoherence occurs when a quantum particle loses its coherence. So, what is coherence?(...)  Read More
 dimensionless number
Pi is an example of a dimensionless number. A dimensionless number doesn’t imply any measurement units. Pi is just 3.14, not(...)  Read More

e
 e
e is the symbol for Euler's number. Similarly to pi, e is a constant which occurs repeatedly throughout nature. It has a(...)  Read More
 Euler's number (e)
Euler's number, similarly to pi, is a constant which occurs repeatedly throughout nature. It is symbolized as e. It has a(...)  Read More

f
 finestructure constant
See alpha, , α.  Read More
 frequency
Frequency is the number of repeated motions in a period of time. These motions can be up and down, like a hammer, or back(...)  Read More
 frequency and wavelength
Frequency and wavelength are both properties of waves. They are closely related, so this article discusses the two(...)  Read More
 function
The term “function” is important in the field of quantum mechanics because is it the basis of the key term “wave function.”(...)  Read More