What is the Huygens-Fresnel principle?Wavefronts:A wavefront is an area that represents the points in a wave that vibrate together and have the same type of motion. It is called a wavefront because it describes the activity of a wave and it applies to a particular surface....
The exact dimensions of the grains are not specified in advance; the argument of Guth will show that is significantly larger than , but other than that there are no bounds. But in principle we should be able to assume without loss of generality that the grains are as “large” as possible...
Is it really 28 days? In this context the correct notion of a lunar month is a “synodic month”– the length of a lunar cycle relative to the Sun – which is actually about 29 days and 12 hours. It differs from the “sidereal month”– the length of a lunar cycle relative to the...
A string x is 1-random if it fails all tests for patterns (in a computable class). 3. A string x is 1-random if there exists no successful (computable) gambling strategy on the digits of x; roughly speaking, these digits are unpredictable. 3 Randomness in Quantum Mechanics Moving towards...