Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Physics Quiz 3.2

TermDefinition
Aperture transducer size, foot print size
curved element as the element is curved more, the focus moves closer to the transducer and becomes tighter
side lobes some intensities are not contained within the sound sound beam and they escape out of the sides and cause artifacts
diffraction from a small point source (transducer), sound goes out in all directions
Huygens principle each small portion of the surface of a transducer may be considered as a separate source
beam diameter -as the sound travels through the near zone, the diameter decreases, as the sound travels through the far zone the diameter increases -depends on: wavelength(frequency), element diameter and distance from element
far zone region that lies beyond a distance of one near zone length, beam diverges
near zone region that extends from the element out to a distance of one near zone length, beam converges
near zone length depends on size and frequency of the element increases with increasing frequency and diameter squared
focal zone the distance between equal beam widths (focus), the zone between the near zone and far zone, the beam is the narrowest, the best resolution occurs in this zone
focal length distance from the transducer to the center of the focal region (short, medium, long)
beam formation combining the sound coming from all point sources
sound beams with a disc element the beam widths within the scan plane and perpendicular to it are equal to the beam diameter
focusing curved transducer element (internal focusing) curved reflector lens phased array can only be accomplished in the near zone
Created by: Sierd98765
Popular Sonography sets

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards