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Fire Drill

The real intent of the Fire Drill is to prepare the students of Fairfax High School for a real fire (i.e. people setting trash cans on fire). But it in reality, its just a social hour.

I didn't do my chemistry homework, but thanks to the fire drill, my teacher didn't have time to check.

by irishrepublicanarmy December 12, 2003

10👍 10👎


World War Three

For a completely inchorent definition see The Third World War

456.6625 MHz

by irishrepublicanarmy January 21, 2004

1👍 20👎


Jammer

(radio)

a radio transmitter which is designed or modified to send a signal which deliberately inferes with another radio signal. (see also FRS jammer)

Jammers are most widly used by thegovernment and military in order to make it harder for the enemy to use their radio systems.

Also fun when directed at a rap radio station.

Dude! I jammed the rap radio station with the Spongebob theme song for 36 hours!

by irishrepublicanarmy November 13, 2003

8👍 16👎


F region

That portion of the ionosphere existing between approximately 160 and 400 km above the surface of the Earth, consisting of layers of increased free-electron density caused by the ionizing effect of solar radiation. Note 1: The F region reflects normal-incident frequencies at or below the critical frequency (approximately 10 MHz) and partially absorbs waves of higher frequency. Note 2: The F1 layer exists from about 160 to 250 km above the surface of the Earth and only during daylight hours. Though fairly regular in its characteristics, it is not observable everywhere or on all days. The principal reflecting layer during the summer for paths of 2,000 to 3,500 km is the F1 layer. The F1 layer has approxi­mately 5 ´ 105 e/cm3 (free electrons per cubic centi­meter) at noontime and minimum sunspot activity, and increases to roughly 2 ´ 106 e/cm3 during maxi­mum sunspot activity. The density falls off to below 104 e/cm3 at night. Note 3: The F1 layer merges into the F2 layer at night. Note 4: The F2 layer exists from about 250 to 400 km above the surface of the Earth. The F2 layer is the principal reflecting layer for HF communications during both day and night. The horizon-limited distance for one-hop F2 propagation is usually around 4,000 km. The F2 layer has about 106 e/cm3. However, variations are usually large, ir­reg­ular, and particularly pronounced during magnetic storms.

good thing there are like 10 people in the world who know what that means

by irishrepublicanarmy January 3, 2004

47👍 31👎


calibration

1) The process of comparing an instrument's output signal with reality. Instruments that measure solar energy tend to "drift", that is, their output signals do not mean the same thing from one time period to another. Because of this, they are periodically (annually or semi-annually) re-calibrated against more reliable instruments.

2) Adjusting a measuring instrument to make it accurate. The set of operations which establish, under specified conditions, the relationship between values indicated by a measuring instrument or measuring system and the corresponding values of a quantity realized by a reference standard.

3) The act of adjusting the color of one device relative to another, such as a monitor to a printer, or a scanner to a film recorder. Or, it may be the process of adjusting the color of one device to some established standard.

This radio needs some calibration.

by irishrepublicanarmy December 26, 2003

10👍 17👎


gray market

Halfway between the white market (completely legal) and black market (completely illegal). The gray market sells products which are legal to own, but can be used illegaly or are illegal to use completely.

In Virginia, police radar detectors are gray market items because it is legal to own one, but illegal to actully use it.

by irishrepublicanarmy June 5, 2004

316👍 78👎


occoquan

crew slang:

park in northern virginia, run by the Northern Virginia Regional Park Authority. Its right on the occoquan sewage dump (a.k.a. occoquan reservoir)

place were all the good crew teams practice (or in the case of TJ crew, sit around and play on thier TI-83s). Also the site of the NCASRA crew races. Good place with lots of good memories.... also where fairfax crew owns all.




Occoquan, here we come...

by irishrepublicanarmy October 21, 2003

4👍 7👎