Physics

Fuel Cell Definition Fuel cell is like a battery in that it generates electricity from an electrochemical reaction. Both batteries and fuel cells convert chemical…

Power Supply Definition Power supply is a source of electricity for a device, which converts, regulates, and transmits the external power for the device. Typically,…

About Amplifier Definition Amplifier is an electronic device that takes a small electric signal and converts it into a large one. Amplifiers are used in…

Voltmeter Definition Voltmeter is an instrument, which used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit. It…

About Voltage Definition Voltage is the electromotive force or the electrical potential difference between two points in a circuit expressed in volts. It is the…

Oscilloscope Definition Oscilloscope is an electronic instrument, which is used to observe and measure changing electrical signals. The amplitude of the signal as it varies…

Amplitude Definition Amplitude is an ocean wave is the maximum height of the wave crest above the level of calm water, or the maximum depth…

Pendulum Definition Pendulum is a mass hung from a fixed support so that it is able to swing freely under the influence of gravity. Since…

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…