As if having sadistic
TSA agents at the security checkpoint rummage
through our carry-on bags and peering through our clothes using
backscatter x-ray machines
at the airport was not enough, too often we are served up this little treat aloft.
Measurement World's Martin Rowe has come up with yet another Top 16 dB hit, "Below
a Gigahertz." It asks the question, "Remember when 50-MHz clock signals
made a circuit that drives the X-Y-Z axes of an oscilloscope to generate an analog
clock - quite the Lissajous figure!
Straight out of sci-fi,
Denial System uses directed microwaves to make the perps feel like their skin
is on fire, while not causing any damage (skin penetration is only 1/64"). See videos
at bottom of page. AP reporter Elliot Minor volunteers.
OK, maybe it is
as bad as being forced to watch home movies, but here is a short clip of my e-powered
RC airplane. Here is a clip of the
ESC waveform for the brushless motor.
The concept of a
Elevator has been around for a while, but inept materials technology made it
unachievable. Carbon nanotube advances are about to change that. Here is a clip
of a contest held for the first competition for working
Help Put a 'New Face' on Engineering in 90 Seconds; 'How Engineers
Make a World of Difference.' IEEE-USA Online Video Scholarship Competition - $10,000
in total prizes. Due date Friday, January 18, 2008.
Here is a case of extreme
resonance with constructive interference that is destructive. This man breaks a
glass with voice. The fatal "blow" is 566 Hz at 105 decibels.
Electromagnetic field simulation of cell phone near human head. It
gives you that warm, fuzzy feeling - or is that the microwaves? Courtesy
Technische Universitat Darmstadt.