Saturday, October 17, 2009

#180



Connect. . .

3 comments:

Sharmavardhan said...

doppler gun used to measure the speed of movin objects..?

utkarsh said...

related to mach speed.
some mr mach?

Balaji Subramanian said...

charles/chuck yeager---bell x-1---1st aircraft to cross mach 1(speed of sound) and diagram shows sonic boom.