Visible Light Spectrum Explained - Wavelength Range / Color Chart Diagram - Chemistry

TL;DR

This video explains the visible light spectrum, including the colors, wavelengths, and frequencies of light, and provides equations for converting between them.

Transcript

in this video we're going to focus on the visible light spectrum we're going to talk about the colors found in it the wavelength of those colors we're going to talk about the frequency energy and the wavelength relationship among those colors as well so let's begin have you ever heard an expression called roygbiv this expression it ranks the colors... Read More

Key Insights

• 😪 The visible light spectrum ranks colors from red to violet, with red having the longest wavelength and violet having the shortest wavelength.
• 🩵 Energy and frequency increase from left to right in the visible light spectrum, with blue light having the highest energy and frequency.
• ❓ Wavelength and frequency are inversely related, meaning as wavelength decreases, frequency increases.
• 🙂 The visible light spectrum ranges from approximately 400 to 700 nanometers.
• 🚦 The equations c = λv and E = hf relate wavelength (λ), frequency (v), speed of light (c), and energy (E).
• 🙂 The speed of light in a material other than empty space is equal to the speed of light in a vacuum divided by the material's index of refraction.
• 🙂 Converting between wavelength and frequency involves dividing or multiplying by the speed of light.

Questions & Answers

Q: Which photon has more energy, a green photon or a yellow photon?

The green photon has more energy because energy increases from left to right in the visible light spectrum.

Q: Which one has a higher frequency, a blue photon or a yellow photon?

The blue photon has a higher frequency because frequency increases from left to right in the visible light spectrum.

Q: Which one has a longer wavelength, orange or red?

Red has a longer wavelength than orange because wavelength decreases from left to right in the visible light spectrum.

Q: Which one has less energy, orange or violet?

Orange has less energy than violet because energy increases from left to right in the visible light spectrum.

Q: Which one has a shorter wavelength, blue or violet?

Violet light has a shorter wavelength than blue light because wavelength decreases from left to right in the visible light spectrum.

Q: What is the color that corresponds to a wavelength of 530 nanometers?

A wavelength of 530 nanometers corresponds to a green photon because it falls between the wavelength ranges of 500 to 570 nanometers for green light.

Q: What wavelength of light corresponds to 650 nanometers?

A wavelength of 650 nanometers corresponds to the color red because it falls between the wavelength ranges of 620 to 700 nanometers for red light.

Q: What wavelength corresponds to violet light?

A wavelength around 425 nanometers corresponds to violet light, which has the shortest wavelength in the visible light spectrum.

Summary & Key Takeaways

• The visible light spectrum contains colors ranked from red to violet, with red having the longest wavelength and violet having the shortest wavelength.

• The energy and frequency of light increase from left to right in the visible light spectrum, with blue light having the highest energy and frequency.

• The wavelength and frequency of light are inversely related, so as wavelength decreases, frequency increases.