Past
MadSci NET Topics
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Prior to
1999, 500khz had a very important function - so important, that
there were mandated periods of silence between 480 and 520 kilohertz.
What was the important designation and when did the band go silent? |
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There is
a satellite that is commonly referred to as OSCAR-Zero, and it
is still in regular use by Amateurs today. What is its other
name, and roughly how far out in space is its orbit?
[link is a .pdf file] |
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What's the
meaning and origin of the Q-Signal QRRR, and is it still in use? |
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Which OSCAR
Sat was the first to remain in operation for over 1 year, and
how long was it actually in operation? |
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What
was the invention between the time of the Spark Gap and the
Triode, crucial to radio reception, and when did which Englishman
invent it? |
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What
SF scientist invented the TX & RX system used in today's
analog TV systems, and in what year was it announced? |
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What
was the first novel ever to be written on a typewriter?
(do a search for "Typewriter") |
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Between what
2 cities was the first US telegraph message sent, and when? |
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What
is the origin of Tungsten and what was the very first light-bulb
filament made of? |
