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Long Wavelength Cutoff Point Formula

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Wavelength Cutoff Point is the point at which is the wavelength at which a material or device ceases to absorb or transmit light efficiently. Check FAQs

λ c = [hP] \cdot \frac{[c]}{E g}

λ_c - Wavelength Cutoff Point?E_g - Bandgap Energy?[hP] - Planck constant?[c] - Light speed in vacuum?

Long Wavelength Cutoff Point Example

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Here is how the Long Wavelength Cutoff Point equation looks like with Values.

Here is how the Long Wavelength Cutoff Point equation looks like with Units.

Here is how the Long Wavelength Cutoff Point equation looks like.

1.1E-26 = 6.6E-34 \cdot \frac{3E+8}{18}

1.1E-26m = 6.6E-34 \cdot \frac{3E+8m/s}{18J}

1.1E-26 = 6.6E-34 \cdot \frac{3E+8}{18}

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Long Wavelength Cutoff Point Solution

Follow our step by step solution on how to calculate Long Wavelength Cutoff Point?

FIRST Step Consider the formula

λ c = [hP] \cdot \frac{[c]}{E g}

Next Step Substitute values of Variables

∴

λ c = [hP] \cdot \frac{[c]}{18J}

Next Step Substitute values of Constants

∴

λ c = 6.6E-34 \cdot \frac{3E+8m/s}{18J}

Next Step Prepare to Evaluate

∴

λ c = 6.6E-34 \cdot \frac{3E+8}{18}

Next Step Evaluate

∴

λ c = 1.10358101342875E-26m

LAST Step Rounding Answer

∴

λ c = 1.1E-26m

Long Wavelength Cutoff Point Formula Elements

Variables

Constants

Wavelength Cutoff Point

Wavelength Cutoff Point is the point at which is the wavelength at which a material or device ceases to absorb or transmit light efficiently.

Symbol: λ_c

Measurement: WavelengthUnit: m

Note: Value should be greater than 0.

Formulas to find Wavelength Cutoff Point

Bandgap Energy

Bandgap Energy of the material, which is the energy difference between the valence band and the conduction band in the material's electronic band structure.

Symbol: E_g

Measurement: EnergyUnit: J

Note: Value should be greater than 0.

Formulas to find Bandgap Energy

Planck constant

Planck constant is a fundamental universal constant that defines the quantum nature of energy and relates the energy of a photon to its frequency.

Symbol: [hP]

Value: 6.626070040E-34

Light speed in vacuum

Light speed in vacuum is a fundamental physical constant representing the speed at which light propagates through a vacuum.

Symbol: [c]

Value: 299792458.0 m/s

Other formulas in Optical Detectors category

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η = \frac{N e}{N p}

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R i = \frac{P i}{[hP] \cdot F i}

Go Electron Rate in Detector

R p = η \cdot R i

Go Longest Transit Time

t s = \frac{w}{V d}

How to Evaluate Long Wavelength Cutoff Point?

Long Wavelength Cutoff Point evaluator uses Wavelength Cutoff Point = [hP]*[c]/Bandgap Energy to evaluate the Wavelength Cutoff Point, Long Wavelength Cutoff Point allows you to calculate the cutoff wavelength for a given material based on its bandgap energy. It's particularly relevant in the design of semiconductor devices and optical components, as the cutoff wavelength determines the range of wavelengths of light that can be efficiently absorbed or transmitted by the material. Wavelength Cutoff Point is denoted by λ_c symbol.

How to evaluate Long Wavelength Cutoff Point using this online evaluator? To use this online evaluator for Long Wavelength Cutoff Point, enter Bandgap Energy (E_g) and hit the calculate button.

FAQs on Long Wavelength Cutoff Point

What is the formula to find Long Wavelength Cutoff Point?

The formula of Long Wavelength Cutoff Point is expressed as Wavelength Cutoff Point = [hP]*[c]/Bandgap Energy. Here is an example- 1.1E-26 = [hP]*[c]/18.

How to calculate Long Wavelength Cutoff Point?

With Bandgap Energy (E_g) we can find Long Wavelength Cutoff Point using the formula - Wavelength Cutoff Point = [hP]*[c]/Bandgap Energy. This formula also uses Planck constant, Light speed in vacuum constant(s).

Can the Long Wavelength Cutoff Point be negative?

No, the Long Wavelength Cutoff Point, measured in Wavelength cannot be negative.

Which unit is used to measure Long Wavelength Cutoff Point?

Long Wavelength Cutoff Point is usually measured using the Meter[m] for Wavelength. Megameter[m], Kilometer[m], Centimeter[m] are the few other units in which Long Wavelength Cutoff Point can be measured.

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