Version 2.1

Young’s Experiment

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Young’s Experiment

You will have to successfully determine the wavelength of red, green, and blue light to complete this activity. To do so … • Measure the distance between selected bright spots on the screen. • Use given values of slit separation distance and screen distance. • Use Young’s equation to calculate wavelength. If you incorrectly calculate wavelength for any light color, you will have to repeat the color with different values until you get it correct. Your progress will be displayed at the bottom of the screen; a check indicates the successful anlaysis of that particular light color. A trophy is displayed when you successfully analyze all three light colors.

Let’s Do It!

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Progress:

Red:

Green:

Got It!

Blue:

Wavelength ???

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0

Tap on the screen above (on two bright spots) to make measurements. Once you calculate λ, use the slider below to enter your answer.

Check Answer

Magnified Front View of Screen

600

Wavelength (nm):

Health:

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You are logged in. Your username is listed above. Your progress will be tracked and stored.

Young’s Experiment

IMPORTANT: You are not logged in. If you have a Task Tracker account, you will need to first log-in to have your progress stored. Visit the My Account page, log in, and then return to this page to start this activity. Otherwise you can use this activity as a guest … but your progress results won’t be saved.

Double Drats! Some instructors set up a penalty for missing. If you miss too many questions and appear to be randomly guessing, your game will end. That’s what has happened to you. Your results have been saved but you would have to start over from ground zero.

Choose an option:

No Thanks. I’ve Had Enough For Now.

But don’t despair. You can do this! You may need to … 1. Use our Tutorial pages or Videos. 2. Refer to class notes or handouts. 3. Go slower. Read more carefully. 4. Change your thinking about this concept. 5. Take a break and try again later.

Try Again

Nice offer, but ...

Try it Again. Make My Friends Jealous.

Our records indicate that you've completed this activity. Good work!

No Thanks. Return to Main Page.

If you would like to repeat this activity for practice (or for bragging rights among friends), then you have the option to do so:

Return to Main Page.

Congratulations! You have successfully completed this activity.