Physics

Oscillation Definition Oscillation is a repeating fluctuation in a physical object or quantity. Oscillation in a device called an oscillator is usually a back and…

Frequency Definition Frequency is the rate at which a repeating event occurs, such as the full cycle of a wave. Frequencies are usually measured in…

Spectrogram Definition Spectrogram is a visual representation of the Short-Time Fourier Transform. Spectrograms are sometimes called spectral waterfalls, voiceprints, or voicegrams. Spectrograms are commonly used…

Spectrum Definition Spectrum is a range over which some measurable property of a physical phenomenon, such as the frequency of sound or electromagnetic radiation, or…

Metastability Definition Metastability is the quality of a physical system that persists in its existing equilibrium when undisturbed or only slightly disturbed, but able to…

Infrared Definition Infrared or Infrared radiation is the part of the electromagnetic spectrum with a longer wavelength than light but a shorter wavelength than radio…

Silver Chloride Definition Silver chloride is a white insoluble powder that darkens on exposure to light because of the production of metallic silver: used in…

About Ultraviolet Radiation Definition Ultraviolet Radiation is absorbed by the ozone molecules in the upper atmosphere (stratosphere), but a potentially dangerous amount passes through the…

Ultraviolet Catastrophe Definition Ultraviolet Catastrophe refers to a paradox that emerged in scientists’ understanding of the way light is emitted by black bodies that exist…

Force Definition Force is a dynamic influence that changes a body from a state of rest to one of motion or changes its rate of…

Magnetometer Definition Magnetometer is an instrument for measuring the magnitude and direction of a magnetic field. Magnetometers are often used in archaeological and geological investigations…

Torque Definition Torque is the tendency of a force applied to an object to make it rotate about an axis. It is also a vector…