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- Light travels slower in air than in a vacuum, and even slower in water. As light travels into a different medium, the change in speed bends the light. Different wavelengths of light are slowed at different rates, which causes them to bend at different angles.
science.nasa.gov/ems/03_behaviors
Photons are the smallest possible particles of electromagnetic energy and therefore also the smallest possible particles of light. Photons can travel at the speed of light because they have no mass (thanks to relativity).
Photons are massless particles that always move at the speed of light measured in vacuum. The photon belongs to the class of boson particles. As with other elementary particles, photons are best explained by quantum mechanics and exhibit wave–particle duality , their behavior featuring properties of both waves and particles . [ 2 ]
20 hours ago · Photon Applications. Lasers: Lasers work by emitting photons of the same energy, creating a focused beam of light. This technology is used in everyday devices like barcode scanners and printers and even in medical treatments such as eye surgery (e.g., LASIK). Photosynthesis: In plants, photons from sunlight are absorbed by chlorophyll and other ...
Nov 16, 2019 · Incoherent light just heats up the water due to absorption and inelastic scatters of the individual photons. Transparency in the water means that most of the photons scatter elastically with the medium, keeping their frequency and the images they build up.
Dec 21, 2023 · Photons are now considered bosonic excitations in a quantum electromagnetic field that permeates space, carrying the electromagnetic force between charged particles. When two electrons interact, they exchange a photon, the particle of light.
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Mar 5, 2017 · Water is transparent because no energy is dissipated in the interaction between the light and the water. Objects that absorb light take energy from th light and convert it into other forms such as molecular vibrational energy (i.e. heat).
Apr 10, 2022 · Describe the relationship between wavelength, frequency, and speed of light. Discuss the particle model of light and the definition of photon. Explain how and why the amount of light we see from an object depends upon its distance.
