Photon — Chemistry Definition | AllChemicals | AllChemicals

What is Photon?

A photon is a quantum of electromagnetic radiation — the fundamental particle of light and all electromagnetic waves. Photons are massless, travel at the speed of light (3×10⁸ m/s), and carry energy E = hν, where h is Planck's constant and ν is the frequency. The photoelectric effect, explained by Einstein in 1905, demonstrated the particle nature of light and established the photon concept.

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Term Photon

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What is Photon?

A photon is a quantum of electromagnetic radiation — the fundamental particle of light and all electromagnetic waves. Photons are massless, travel at the speed of light (3×10⁸ m/s), and carry energy E = hν, where h is Planck's constant and ν is the frequency. The photoelectric effect, explained by Einstein in 1905, demonstrated the particle nature of light and established the photon concept.

More "P" Terms

P-type Semiconductor Pairing Pairing Energy Palladium Pd Parachor [P] = M(γ)^(1/4) / (ρ_L - ρ_V) Paramagnetic χ_m > 0; unpaired electrons; μ = √(n(n+2)) BM (n = unpaired electrons) Paramagnetism Partial Ionic Character % ionic = (1 - e^(-Δχ²/4)) × 100% Partial Pressure Partial Pressure p_i = x_i × P_total; P_total = Σp_i Particulate Matter Parts Per Million ppm = mg/L (water) or mg/kg; = (mass solute/mass solution) × 10⁶

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