मुफ्त फोटॉन ऊर्जा कैलकुलेटर
फोटॉन की ऊर्जा (E = hf) निकालें। आवृत्ति या तरंगदैर्ध्य से फोटॉन ऊर्जा जानें।
Energy (J)
0.000000 J
Energy (J) vs Wavelength
सूत्र
Photon Energy
A photon's energy is proportional to its frequency and inversely proportional to its wavelength.
Formula
E = h * f = h * c / lambda
where h = 6.626 x 10^-34 J·s is Planck's constant and c = 3 x 10^8 m/s. To convert to electron volts, divide by 1.602 x 10^-19.
हल किया गया उदाहरण
A green photon with wavelength 550 nm.
- 01f = c / lambda = 3e8 / 550e-9 = 5.45e14 Hz
- 02E = h * f = 6.626e-34 * 5.45e14
- 03E = 3.614e-19 J
- 04E = 3.614e-19 / 1.602e-19 = 2.257 eV
अक्सर पूछे जाने वाले प्रश्न
What is a photon?
A photon is a quantum (discrete packet) of electromagnetic energy. It has no mass and always travels at the speed of light.
Why do different colors have different energies?
Color corresponds to wavelength. Shorter wavelengths (violet/blue) have higher frequency and thus higher energy per photon.
What energy do X-ray photons have?
X-ray photons have energies from about 100 eV to 100 keV, much higher than visible light photons (1.8-3.1 eV).
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