The energy wavelength equation is: E = hc/I, where E indicates energy measured in joules, I indicates wavelength in meters, c is the constant for how fast electromagnetic radiation (light for all extensive purposes) trav... More » Science Physics Optics & Waves

Wavelength measures the distance from one point of a wave to the same point on an adjacent wave, whereas the frequency represents how many waves are produced from the source per second. Wavelengths are measured in nanome... More » Science Physics Optics & Waves

All electromagnetic waves move at the speed of light; subsequently, the wavelength and frequency of waves must be proportional, as the wavelength multiplied by the frequency equals the speed of light. As wavelength incre... More » Science Physics Optics & Waves
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Wien’s law, also known as the displacement law, reveals the wavelength at which any object emits the majority of its energy. The formula used to calculate the wavelengths using Wien’s law is λmax (wavelength) equals 3 x ... More » Science Physics Optics & Waves

Infrared is energy with a longer wavelength than visible light, existing just outside the range of human vision. The sun is a natural source of infrared energy, as well as many other forms of energy from across the elect... More » Science Physics Optics & Waves

The basic properties of light are its wavelength, frequency, energy and speed. Light is composed of energy particles called photons and can behave as either a wave or as separate particles. More » Science Physics Optics & Waves

Light is composed of photons, which are discrete collections of energy with wave and particle properties, while sound travels as a wave through a medium, which makes it travel more slowly. While light and sound have some... More » Science Physics Optics & Waves