# Wien’s constant

Wien's constant is the value of the constant in Wien's displacement law, which states that the wavelength λ of the peak of the black-body radiation curve is inversely proportional to the temperature T of the black body:

λ_{max} = frac{b}{T}

where b is Wien's constant, equal to 2.8977729(17)×10−3 m·K.

The law is named after Wilhelm Wien who discovered it in 1896. What is the constant in Wien's displacement law? Wien's displacement law states that the wavelength of maximum emission from a black body is inversely proportional to the temperature of the body. The constant in this law is known as the Wien constant, and has a value of about 2.89 x 10-3 mK.

What is K in Wien's law? Wien's law is an empirical law that states that the wavelength at which an object emits the most thermal radiation is inversely proportional to the object's absolute temperature. The constant of proportionality is known as the Wien displacement law constant, or simply the Wien constant. The Wien constant has the value of 2.8977719 x 10-3 m·K.

### How do you calculate Wien's law?

The Wien displacement law states that the wavelength of maximum emission for a black body is inversely proportional to the body's temperature. The law is named after Wilhelm Wien, who derived it in 1893.

To calculate the wavelength of maximum emission, we need to know the temperature of the black body. The formula for the wavelength of maximum emission is:

λmax = b/T

where b is the Wien constant, which has a value of 2.8977729 x 10-3 mK.

plugging in the values we get:

λmax = 2.8977729 x 10-3 mK / T

For example, if the temperature of the black body is 3000 K, the wavelength of maximum emission would be:

λmax = 2.8977729 x 10-3 mK / 3000 K

λmax = 9.659 x 10-7 m

Which is in the infrared region of the electromagnetic spectrum.

#### What is the dimension of Wien's constant?

Wien's constant is a physical constant that is named after Wilhelm Wien. It is a fundamental constant of blackbody radiation. The value of Wien's constant is

Wien's constant has the dimension of temperature. What is dimension of Boltzmann constant? The dimension of the Boltzmann constant is energy divided by temperature, or E/T. The unit of measurement for the Boltzmann constant is the joule per kelvin (J/K).