Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Geometric Optics #2

Shadows, Pinhole Cameras, Prisms

What is umbra? Latin word for shade; another work for shadow
What is penumbra? Latins word meaning almost a shade
What does eclipse mean? Greek work for failure to appear.
In a pinhole camera the smaller the hole, the _______ the image. Sharper
Where does the word image come from? The Latin word Imaga, which means imitation
Images are ________, so they appear upside down? Inverted
What is a prism? An optical medium with non-parallel sides?
Angles inside and outside the prism are usually not _____? Equal
What are prisms used for? changing the apparent positions of the object; altering the direction light travels; measuring and correcting phorias and trophias; reflecting light
The two refracting surfaces are referred to as.... first and second surfaces, or front and back surfaces
What is the reflecting surface of a prism? The second surface if the critical angle is exceeded
What is the apical angle? The number of degrees between the first and second refracting surface. Referred to as (a)
The orientation of prisms is described according to it's? Base Direction
Prisms bend light towards the..? base
Prisms deviate light towards the...? Apex
What is dispersion? The breaking up of white light into its spectral components (wavelengths/colors)of the electromagnetic spectrum.
Created by: griffiskr