home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The Epic Interactive Encyclopedia 1998
/
Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
/
M
/
Mach_number
/
INFOTEXT
< prev
Wrap
Text File
|
1992-09-03
|
337b
|
10 lines
A Mach number is the ratio of the speed of a
body to the speed of sound in the undisturbed
medium through which the body travels. Mach 1
is reached when a body (such as an aircraft)
has a velocity greater than that of sound
(`passes the sound barrier'), namely 331m
(1,087) ft per second at sea level.
Subject by: George Sweeney