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4 days ago · Electromagnetic Spectrum. The energy of the radiation shown on the spectrum below increases from left to right as the frequency rises. EPA’s mission in radiation protection is to protect human health and the environment from the ionizing radiation that comes from human use of radioactive elements.
4 days ago · The instantaneous electromagnetic wave intensity of a uniform plane wave. Thus Poynting’s theorem says that the integral of the inward component of the Poynting overlinetor over the surface of any volume V equals the sum of the power dissipated and the rate of energy storage increase inside that volume.
5 days ago · The electromagnetic spectrum is a testament to the vast and complex nature of our universe. By understanding its different wavelengths and their properties, we can unlock new technologies, improve our health, and explore the cosmos in unprecedented ways.
5 days ago · The electromagnetic spectrum is a testament to the vastness and complexity of the universe. While we may only perceive a small portion of its energy, its influence permeates our lives, enabling communication, driving technology, and revealing the secrets of the cosmos.
4 days ago · Ionizing radiation, flow of energy in the form of atomic and subatomic particles or electromagnetic waves that is capable of freeing electrons from an atom, causing the atom to become charged (or ionized). Ionizing radiation includes the more energetic end of the electromagnetic spectrum and subatomic particles.
1 day ago · In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein 's 1905 treatment, the theory is presented as being based on just two postulates: [p 1] [1] [2]
11 hours ago · Most of the electromagnetic spectrum is non-ionizing, i.e. majority of the ultraviolet wavelengths, visible light, infrared, microwaves and radio waves. Sound waves (used in ultrasound) are mechanical, as opposed to electromagnetic, waves.
