This collection of video and a few audio files represents files that have been featured on the RF
Cafe homepage. Every week or so a new file is added that should be of interest to RF Cafe visitors.
Please send me an
if you have
a good subject. Videos for Engineers formerly went
by the name "Cool Videos."
ready to flip the dial on your compass by 180° soon. Well not real soon, but indications point to another
reversal of the Earth's magnetic field reversal in as little as
1,500 years. To more
accurately investigate the phenomenon, researchers at the U. of MD have constructed a 30-ton sphere that spins
at more than 90 mph to generate magnetic fields. The 10-ft sphere is filled with 13.5 tons of liquid sodium to
mimic the Earth’s liquid-iron center core. A 3.3-ft sphere counterrotates inside the larger one.
heard of playing an air guitar. Well, this is sort of an air amp + speaker + light show all in one. All the
action is provided by a Tesla Coil that is rigged to respond to an electric guitar. There is not a lot of
background info on the contraption, or even the inventor. It definitely passes the geek test.
you have an HP 54600B o-scope sitting around the lab, here is a way to reduce a little stress. #1 Power on the
scope. #2 Press the button "Print/Utility" once. #3 Hold function buttons 2 and 3 down at the same time, for
half a second. Play Tetris! Maybe it works on other models as well.
is why your mother told you to never stand under a tree during a lightning storm. What's the safest place to
be while outside? In your car. Supposedly, nobody has ever been killed (at least in Canada) when lightning
struck the car he/she was in. It is
to that Faraday Shield thing at work.
This robotic pack
"animal" is so life-like that it is shocking. You would swear it is some kind of hoax - but it definitely is
not! If you have not already watched the video of Boston Dynamics' Big Dog in action, you need to do so now.
IEEE reporter gives a brief tour of the $8B, Large Hadron Collider (LHC),
operated by CERN. This is the machine that
kooks have sued to
try to keep from operating, fearing the creation of an Earth-swallowing black hole. The LHC made its debut
1-way test last week, 20 years after breaking ground. The 12 kiloton, 5-story main detectors contain enough
wire to wrap 7x around earth.
a Boeing 777 be fully assembled, painted and flown in 4 minutes and 10 seconds. Engineering projects of this
magnitude always amaze me when I consider the logistics involved: materials sciences, human factors,
electronics, aerodynamics, communications, computer simulations, and much more.
Thanks to Cornell.
University mechanical engineering students and profs introduced
Broughal MS students to the process of
computer-based design and manufacturing by helping them modify their Matchbox cars for a good old-fashioned
downhill race (w/modern electronic timer). They aerodynamically shaped the car, then created wax and aluminum
molds for producing plastic prototypes of their designs.
not for being so pathetic, it would be funny. Watch/listen as a politician reads into the Congressional Record
the EPA's procedure for properly handling the cleanup and disposal of CFL light bulbs. Hopefully, by the time
the light bulb police require us all to stop using incandescent bulbs, the LED models will be available.
pond scum into biofuels is the crowning achievement of Valcent Products, which has developed a conversion
system that uses engineered algae. Unlike current processes that waste consumable food crops to produce less
than break-even energy yields just to make certain types feel good about themselves, no child
(human, anyway) will go hungry because of
Vertigro production. A
hectare of processing area can yield more than 48,000 L of oil per year, while the same area of a corn field
gets you only 40 L/yr. Founder Kertz predicts refinement of the process can eventually yield 150,000
L/hectare/year. Here is a
video of the process.
wish I understood Japanese and knew what these guys are saying. Evidently, building and operating giant air
vortex guns is great sport in Japan. Adding smoke to the mix for enhanced visualization gives it a cool,
menacing, sci-fi look.
video shows how an electron rides on a light wave after just having been pulled away from an atom. This is the
first time an electron has ever been filmed in this way. "We demonstrate a quantum stroboscope based on a
sequence of identical attosecond pulses that are used to release electrons into a strong infrared laser field
exactly once per laser cycle."