A system for measuring Time of Flight (ToF) of wind using multiple ultrasonic sensors is introduced here. The time taken by the ultrasonic sound to travel from a transmitter to a receiver is expressed ...

The results of an experimental study, in which time-domain pulses are used to measure the far-field characteristics of an antenna, are presented. Pulses with duration and rise time of the order of 50 ...

A mom of two was left shocked at the contents of a time capsule she buried in the second grade some 25 years ago.