Lorentz force Source: Lorentz force acting on fast-moving charged particles in a bubble chamber. Positive and negative charge trajectories curve in opposite directions. In electromagnetism, the Lorentz

Tribute in Light Source: The Tribute's illumination begins at dusk and ends at dawn, with the lights being turned off for 20-minute periods to allow migratory birds to escape as needed. On clear nights,

Munich massacre Source: This article is about the 1972 massacre. For other attacks, see Munich attack. Munich massacrePart of the Israeli–Palestinian conflictOne of the most reproduced photos taken during

Ground (electricity) Source: A typical earthing electrode (brown rod), consisting of a conductive rod driven into the ground, at a home in Australia. Most electrical codes specify that the insulation on

Geostationary orbit Source: A 5° × 6° view of a part of the geostationary belt, showing several geostationary satellites. Those with inclination 0° form a diagonal belt across the image; a few objects

Duty cycle Source: As a ratio, duty cycle is unitless and may be given as decimal fraction and percentage alike. An alternative term in use is duty factor.[7][8][9] Electrical and electronics[edit] In

Geosynchronous orbit Source: The geosynchronous orbit was popularised by the science fiction author Arthur C. Clarke, and is thus sometimes called the Clarke Orbit. In 1929, Herman Potočnik described both

RING OF LOVE: AMAZED PALS HAIL MIRACLE RELIC FOUND AMID WTC RUBBLE Source: Among the relics found in the ruins of the World Trade Center was a simple designer silver ring worn as a symbol of enduring

Alpha decay Source: Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus). The parent nucleus transforms or "decays" into a

Electrolysis Source: This article is about the chemical process. For the cosmetic hair removal procedure, see Electrology. Illustration of a Hofmann electrolysis apparatus used in a school laboratory In

Brewster's angle Source: An illustration of the polarization of light that is incident on an interface at Brewster's angle. Brewster's angle (also known as the polarization angle) is the angle of incidence

Dielectric Source: A perfect dielectric is a material with zero electrical conductivity (cf. perfect conductor infinite electrical conductivity),[9] thus exhibiting only a displacement current; therefore

Brewster's angle Source: An illustration of the polarization of light that is incident on an interface at Brewster's angle. Brewster's angle (also known as the polarization angle) is the angle of incidence

Polarization (waves) Source: Polarization, or polarisation, is a property of transverse waves which specifies the geometrical orientation of the oscillations.[1][2][3][4][5] In a transverse wave, the direction

Alcubierre drive Source: The Alcubierre drive ([alkuˈβjere]) is a speculative warp drive idea according to which a spacecraft could achieve apparent faster-than-light travel by contracting space in front

Leopard Source: The leopard (Panthera pardus) is one of the five extant cat species in the genus Panthera. It has a pale yellowish to dark golden fur with dark spots grouped in rosettes. Its body is slender