Extrasolar Planets, Radial Velocity, and Astrometry
Setting the Scene
Text and graphics by Fritz Benedict
The Device, a seesaw or teeter-totter
The Players
The adult and the child sit on the teeter-totter. What happens? At first, not much. The child rises into the air and stays there.
A Static Situation
Both the child and the adult know which way the adult has to scoot (carefully! Teeter-totters can have splinters!) to turn this into a dynamic (moving) event.
Take our survey | UT Department of Astronomy
Copyright ©2009-2012 McDonald Observatory. This material is based upon work supported by the National Aeronautics and Space Administration under Grant/Contract/Agreement No. HST EO 11210.08 issued through the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555.