**Introduction**

In this experiment, we will use the wavelength of primary color to determine the wavelength of white light and additive colors. For performing this experiment, we will be building a machine.

**Aim**

To determine the wavelength of white light and additive colors by using the wavelength of primary colors.

**Theory**

1. There are three primary colors. Those are red, blue, and green.

2. We hypothesized that all the additive colors come from these primary colors. Not just additive color but white light also originates from primary colors.

**Requirements**

1. Wood

2. Reflector

3. Paint

4. Wiring

5. Dimmer

6. Red light

7. Greenlight

8. Blue light

9. Diffuser Strip

10. Nails

11. Screws

12. Calculator

13. Notepad

14. Pencil

15. Camera

**Procedure**

**Step 1:** Assemble the lights, wiring, and dimming materials into the color machine.

**Step 2:** Blend the primary colors to obtain additive colors and also the white light.

**Step 3:** Add a diffuser strip for the distinction of the prism.

**Step 4:** Take photos while the blending happens.

**Step 5:** Apply wavelength to the primary colors.

**Step 6:** Calculate the average wavelength of two primary colors to calculate the wavelength of additive colors.

**Step 7:** Calculate the wavelength of the white color by taking the average of all three primary colors.

**Step 8:** Test the calculation in the machine.

**Step 9:** Note down your result in a notepad.

**Observation**

1. On taking the wavelength of primary color in pairs, we measured the wavelength of additive colors.

2. We used the average wavelength of three primary colors to calculate the wavelength of white light, But we could not find any mathematical result.

**Result**

1. We successfully created the additive color by blending the primary color.

2. We calculated the wavelength of additive colors by blending the wavelength of primary colors.

3. We hypothesize that white light also comes from the primary color. But we were wrong.

4. We could not calculate the wavelength of white light using the wavelength of primary colors.

5. Therefore, it is wrong to say that the wavelength of white light can be calculated as the wavelength of additive color has been calculated.

**Precaution**

1. Make sure the machine is working correctly.

2. Note down your calculation carefully.

**VIVA Questions With Answers**

**Q.1 What was the aim of your experiment?**

ANS. We aimed to determine the wavelength of additive color and white light with the help of the wavelength of primary colors.

**Q.2 Can you calculate the wavelength of additive color using the primary color wavelength?**

ANS. Yes, it is possible to calculate the wavelength of additive color using the wavelength of primary color.

**Q.3 Can you calculate the wavelength of white color using the wavelength of primary color?**

ANS. No, we could not calculate the white color wavelength using the wavelength of the primary color.

Saquib Siddiqui is a Mechanical Engineer and a content creator. He has special interest in science experiments and teaches the same to school and college students. He is also a technical lead at RUDE LABS PVT. LTD.

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