The image above represents monochromatic emissive power.

To compute for monochromatic emissive power, five essential parameters are needed and these parameters are **Planck’s Constant (h), Velocity of Light (c), Wavelength (λ), Boltzmann’s Constant (K _{B})** and

**Temperature (T).**

The formula for calculating monochromatic emissive power:

e_{bx} = ^{2πhc²λ-5} / _{exp(ch/KBλT) – 1}

Where:

e_{bx} = Monochromatic Emissive Power | Planck’s Equation

h = Planck’s Constant

c = Velocity of Light

λ = Wavelength

K_{B} = Boltzmann’s Constant

T = Temperature

Let’s solve an example;

Find the monochromatic emissive power when the planck’s constant is 6.626E-24, the velocity of light is 3E8, the wavelength is 22, the boltzmann’s constant is 1.380E-23 and the temperature is 10.

This implies that;

h = Planck’s Constant = 6.626E-24

c = Velocity of Light = 3E8

λ = Wavelength = 22

K_{B} = Boltzmann’s Constant = 1.380E-23

T = Temperature = 10

e_{bx} = ^{2πhc²λ-5} / _{exp(ch/KBλT) – 1}

e_{bx} = ^{2π(6.62607004e-34)(300000000)²(22)-5} / _{exp((300000000)(6.62607004e-34)/(1.38064852e-23)(22)(10)) – 1}

e_{bx} = ^{2π(6.62607004e-34)(90000000000000000)(1.94037e-7)} / _{exp(1.987821012e-25/3.037426744e-21) – 1}

e_{bx} = ^{7.270512005456302e-23} / _{exp(0.00006544424539379114) – 1}

e_{bx} = ^{7.270512005456302e-23} / _{1.0000654463869152 – 1}

e_{bx} = ^{7.270512005456302e-23} / _{0.00006544638691519111}

e_{bx} = 1.11e-18

Therefore, the **monochromatic emissive power **is **1.11e-18.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the monochromatic emissive power.

To get the answer and workings of the monochromatic emissive power using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 2,000 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Materials and Metallurgical **under **Engineering****.**

Now, Click on **Radiation Heat Transfer **under **Materials and Metallurgical**

Now, Click on **Monochromatic Emissive Power **under **Radiation Heat Transfer**

The screenshot below displays the page or activity to enter your values, to get the answer for the monochromatic emissive power according to the respective parameter which is the **Planck’s Constant (h), Velocity of Light (c), Wavelength (λ), Boltzmann’s Constant (K _{B})** and

**Temperature (T).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Planck’s Constant (h)** is **6.626E-34**,** Velocity of Light (c)** is **3E8**,** Wavelength (λ)** is **22**,** Boltzmann’s Constant (K _{B}) **is

**1.380E-23**and

**Temperature (T)**is

**10**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the monochromatic emissive power and presents the formula, workings and steps too.