visible light wave
DESCRIPTION
Gelombang cahaya tampakTRANSCRIPT
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…