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  2. Absorption (electromagnetic radiation) - Wikipedia

    en.wikipedia.org/wiki/Absorption_(electromagnetic...

    Rough plot of Earth's atmospheric transmittance (or opacity) to various wavelengths of electromagnetic radiation, including visible light. Understanding and measuring the absorption of electromagnetic radiation has a variety of applications. In radio propagation, it is represented in non-line-of-sight propagation.

  3. MinutePhysics - Wikipedia

    en.wikipedia.org/wiki/MinutePhysics

    MinutePhysics is an educational YouTube channel created by Henry Reich in 2011. The channel's videos use whiteboard animation to explain physics-related topics. Early videos on the channel were approximately one minute long. [2] As of March 2024, the channel has over 5.7 million subscribers.

  4. Dynamo theory - Wikipedia

    en.wikipedia.org/wiki/Dynamo_theory

    Kinetic energy provided by planetary rotation; An internal energy source to drive convective motions within the fluid. [11] In the case of the Earth, the magnetic field is induced and constantly maintained by the convection of liquid iron in the outer core. A requirement for the induction of field is a rotating fluid.

  5. Energy absorber - Wikipedia

    en.wikipedia.org/wiki/Energy_absorber

    A kinetic-energy absorbing medium, sometimes called a crash pit or runaway truck ramp; A shock absorber, a device to dampen spring rebound by expending work by forcing a fluid through ports, and so converting the mechanical energy to heat; In the context of Fall arrest, an energy absorber is a device that limits the energy of a falling body

  6. Energy harvesting - Wikipedia

    en.wikipedia.org/wiki/Energy_harvesting

    Energy harvesting (EH) – also known as power harvesting, energy scavenging, or ambient power – is the process by which energy is derived from external sources (e.g., solar power, thermal energy, wind energy, salinity gradients, and kinetic energy, also known as ambient energy), then stored for use by small, wireless autonomous devices, like those used in wearable electronics, condition ...

  7. Exothermic process - Wikipedia

    en.wikipedia.org/wiki/Exothermic_process

    Photosynthesis, the process that allows plants to convert carbon dioxide and water to sugar and oxygen, is an endothermic process: plants absorb radiant energy from the sun and use it in an endothermic, otherwise non-spontaneous process. The chemical energy stored can be freed by the inverse (spontaneous) process: combustion of sugar, which ...

  8. Tuned mass damper - Wikipedia

    en.wikipedia.org/wiki/Tuned_mass_damper

    Mass dampers are frequently implemented with a frictional or hydraulic component that turns mechanical kinetic energy into heat, like an automotive shock absorber. Given a motor with mass m 1 attached via motor mounts to the ground, the motor vibrates as it operates and the soft motor mounts act as a parallel spring and damper, k 1 and c 1 .

  9. Kinetic energy - Wikipedia

    en.wikipedia.org/wiki/Kinetic_energy

    Kinetic energy is the movement energy of an object. Kinetic energy can be transferred between objects and transformed into other kinds of energy. [10] Kinetic energy may be best understood by examples that demonstrate how it is transformed to and from other forms of energy.