Energy And Frequency
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1) Photons carry light energy, with higher frequency photons like violet having more energy than lower frequency photons like red. 2) Energy of a photon is directly proportional to its frequency, according to Planck's constant h. The equation is E=hf, where E is energy, h is Planck's constant, and f is frequency. 3) While energy is typically measured in Joules, for small amounts it is more practical to use electron Volts (eV), where 1 eV is equal to the energy needed to accelerate an electron through a potential difference of 1 volt.
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1) Light can be represented as both a wave and particle. Photons carry light energy, with higher frequency photons having more energy.
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This document discusses the concepts of electric fields and electric field intensity. It defines electric field as a region of space around charged particles that exert electrostatic forces on other charges. Electric field intensity is defined as the electrostatic force per unit positive test charge. The electric field due to a point charge is discussed, along with the superposition principle and electric field lines. Electric dipoles are introduced as pairs of equal and opposite charges, with discussions of dipole fields, dipole moments, and the torque and work done on an electric dipole in a uniform electric field.
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