Wavelength data worksheet notes

first of all say happy birthday to CARL SAGAN

According to the handout given in class...see http://science.hq.nasa.gov/kids/imager/ems/ 
http://missionscience.nasa.gov/ems/09_visiblelight.html

but this one  seems better....
http://www.physicsclassroom.com/class/waves/u10l2a.cfm

Check Your Understanding

Consider the diagram below in order to answer questions #1-2.
1. The wavelength of the wave in the diagram above is given by letter ______.

2. The amplitude of the wave in the diagram above is given by letter _____.

3. Indicate the interval that represents one full wavelength.

a. A to C
b. B to D
c. A to G
d. C to G

Wavelength of Light

Ever wonder how we able to see the color and how we interpret them. The reason for the interpretation is that the colors are nothing but the electromagnetic radiations with different wavelengths. The visible region of the electromagnetic spectrum is also known as Visible Light. In the below section we will discuss light and the characteristics of different wavelengths of the visible spectrum. Before we proceed forward let us understand the concept of light.

It is an electromagnetic wave which is visible to human eyes. It extends from the infrared region in EM spectrum to the UV region. Other than these regions humans are unable to see. Although we won’t be able to see the region other than the visible region still the infrared and ultraviolet region both are useful for us.

The colour of the object which we see is due to the fact that the object emits that color and it absorbs all the other colours.

Wavelength of Visible Light

Back to Top

As already discussed, the Wavelength of Visible Light ranges from 400 – 700 nm. In this section let us discuss wavelength of different colours of the visible light spectrum.

The visible spectrum of the electromagnetic spectrum is known as visible light. The visible spectrum has various different color with different wavelengths. The violet color has shortest wavelength while the red color has the longest wavelength. It can be seen in the above diagram.

The Wavelength spectrum is explained by the spectrum of electromagnetic spectrum. The electromagnetic spectrum extends from low frequencies to almost infinite frequencies. The low frequencies results in very large wavelength as we know that the wavelength and frequency are inversely proportional to each other and the infinite frequency corresponds to almost zero wavelength which is measured in Plank's length. The Wavelength spectrum has the following range as shown in the figure:

Frequency to Wavelength

Frequency and wavelength are the basic concepts in waves.
In Electromagnetic waves the frequency and wavelength plays a very significant role. There are different types of waves with varying frequency and wavelength in this spectrum.
In order to know the which type of wave it is, we need to understand the Frequency Wavelength Relationship.



***************************** on other notes....lol which one are you?