Visible Light WaveGelombang Cahaya Tampak

Group 4 Farhana NurazizahFauziah Marrizka

Irfan Bayu RamadhanMumpuni Nur Izzati

Definition

Visible light waves are the only electromagnetic waves we can see. We see

these waves as the colors of the rainbow. Each color has a different wavelength. Red has the longest wavelength and violet has the shortest

wavelength. When all the waves are seen together, they make white light.

humans can see the waves with λ = 390- 750 nm and f = 400- 790 THz ( 1 THz = 1012 Hz).

visible light wave has a wavelenght (λ) is 400- 720 nm, while Frequency (f) of visible light wave is 400- 789 THz. *1 THz=1012Hz

How to happen?When white light shines through a

prism, the white light is broken apart into

the colors of the visible light spectrum.

Water vapor in the atmosphere can also

break apart wavelengths creating

a rainbow.

Each color in a rainbow corresponds to a different wavelength of electromagnetic spectrum.

Wavelength

Color Wavelength

Color Frequency Wavelength

violet 668–789 THz 380–450 nm

blue 631–668 THz 450–475 nm

cyan 606–630 THz 476–495 nm

green 526–606 THz 495–570 nm

yellow 508–526 THz 570–590 nm

orange 484–508 THz 590–620 nm

red 400–484 THz 620–750 nm

• Sir Isaac Newton was the first to test the visible light from the sun that through on a prism and produces a bearn of light that can divided into several colors such as red, orange, yellow, green, blue, indigo, and purple.

Figure

RogerBacon is the first person who marked that spectrum shows in a glass of water.

Aplication

Rainbow

Why do we can see rainbows in the sky?

Conclusion…

• Visible light waves are the only electromagnetic waves we can see.• visible light wave has a wavelenght (λ) is 400- 720 nm, while Frequency (f) of visible light wave is 400- 789 THz. *1 THz=1012Hz.• Sir Isaac Newton was the first to test the visible light from the sun that through on a prism and produces a bearn of light that can divided into several colors.• RogerBacon is the first person who trade marked that spectrum shows in a glass of water.• Application: Satellite, Spectofotometer, and rainbow.

1. What is colour that has the shortest wavelenght?a. Redb. Violetc. Greend. Yellow2. How long wavelength of violet colour?e. 620-750 nmf. 590-620 nmg. 380-450 nmh. 450-475 nm

Sample Problem~

3. Who is the figure that marked spectrum shows in a glass of water?a. Isaac Newtonb. James Clark Maxwellc. Christian Huygensd. Roger Bacon4. 1 THz = ….. Hze. 1010

f. 1012

g. 1011

h. 106

Sample Problem~

Thank You…