Physics

The 2nd law of thermodynamics offers us the key for both understanding our environmental crisis and also for comprehending exactly how we should handle this dilemma.

The devices which are used to detect nuclear radiations like α- particles, β- particles, γ- rays, electromagnetic and light radiations are called radiation detectors.

An apparatus for recording and measuring spectra, particularly as an approach of analysis. A spectrometer is a scientific tool used to split light into an array of various colors, called a spectrum.

The Earth and some other planets revolve around the sun in nearly circular paths. The artificial satellites launched by men also adopt nearly circular courses around the Earth.

A diffraction grating is a glass plate having numerous close parallel equidistant slits mechanically ruled on it. The transparent spacing between the scratches on the glass plate act as slits.

Every point on a wave-front may be considered a source of secondary spherical wavelets which spread out in the forward direction at the speed of light.

X-rays are a form of electromagnetic radiation similar to radio waves, microwaves, visible light as well as gamma rays. X-ray photons are extremely energized and also have sufficient power to break up particles as well as can damages living cells.

Plate Tectonic theory states that the Earth’s hard outer crust, the lithosphere, is divided into plates that move over the asthenosphere, the molten top portion of the mantle.

Screw Gauge is a mechanical tool that is used to measure the diameter or radius or thickness of a thin metal sheet with utmost precision. There are two scales known as Pitch Scale which is generally the main scale and also is engraved on the barrel with upright lines.

If the crystal of germanium or silicon is grown in such a way that it’s one half is doped with a trivalent impurity and the other half is doped with a pentavalent impurity, a p-n junction is formed.