SUPERCONDUCTORS AND TELESCOPES - PowerPoint PPT Presentation

1 / 9
About This Presentation
Title:

SUPERCONDUCTORS AND TELESCOPES

Description:

The wire in these coils is not a superconductor. ... train and outside produce forces that levitate the train and keep it centered above the track. ... – PowerPoint PPT presentation

Number of Views:154
Avg rating:3.0/5.0
Slides: 10
Provided by: mell90
Category:

less

Transcript and Presenter's Notes

Title: SUPERCONDUCTORS AND TELESCOPES


1
SUPERCONDUCTORS AND TELESCOPES
  • BY MELANIE LONG

2
How have Superconductors and the effects of
magnetic fields have been applied to develop the
Maglev train?
  • Running alongside the track are walls with a
    continuous series of vertical coils of wire
    mounted inside. The wire in these coils is not a
    superconductor. As the train passes each coil,
    the motion of the superconducting magnet on the
    train induces a current in these coils, making
    them electromagnets. The electromagnets on the
    train and outside produce forces that levitate
    the train and keep it centered above the track.
    In addition, a wave of electric current sweeps
    down these outside coils and propels the train
    forward.

3
(No Transcript)
4
Discuss possible applications of
Superconductivity and the effects of those
applications on computers, generators and motors
and transmission of electricity through power
grids.
  • NASA is looking at how superconductors could be
    used for space. For example, the gyros that keep
    satellites oriented could use frictionless
    bearings made from superconducting magnets,
    improving the satellites' precision. Also, the
    electric motors aboard spacecraft could be a mere
    1/4 to 1/6 the size of non-superconducting
    motors, saving precious volume and weight in the
    spacecraft's design.
  • TRANSMISSIONS
  • GENERATORS
  • POWERGRIDS
  • COMPUTERS

5
(No Transcript)
6
(No Transcript)
7
Astrophysics
  • Telescopes

8
Explain why it is desirable for telescopes to
have a large diameter objective lens or mirror in
terms of both sensitivity and resolution.
  • The sensitivity of a telescope is its ability to
    pick up faint objects for observation.
  • The resolution of a telescope is its ability to
    distinguish two close objects as separate images.
    It is measured as an angle.

9
  • Adaptive optics uses a fast feedback system to
    attempt to correct for effects of atmospheric
    turbulance.
  • Interferometry a technique used to combine the
    data from several elements of an antenna array in
    order to achieve a higher resolution.
  • Active Optics uses a slow feedback system to
    correct sagging or other deformities in the
    primary mirror of large modern reflector
    telescopes.
Write a Comment
User Comments (0)
About PowerShow.com