A-Z of AVIONICS

Karen W. · « **Reply #160 on:** 15/11/2006 05:34:57 »

NICE PHOTO!

UMBRA: (1) The dark inner portion of a sunspot. (2) The maincone of a shadow cast by a planet or the moon.

iko · « **Reply #161 on:** 15/11/2006 09:04:24 »

Von Braun Wernher

http://upload.wikimedia.org/wikipedia/commons/thumb/1/16/S-IC_engines_and_Von_Braun.jpg/486px-S-IC_engines_and_Von_Braun.jpg

ikod

neilep · « **Reply #162 on:** 15/11/2006 15:32:45 »

Wikipedia is a multi-lingual, Web-based free content encyclopedia project. The name Wikipedia is a portmanteau of the words wiki and encyclopedia. Wikipedia is written collaboratively by volunteers, allowing most articles to be changed by almost anyone with access to the Web site. Wikipedia's main servers are in Tampa, Florida, with additional servers in Amsterdam and Seoul.

Wikipedia was launched as an English language project on January 15, 2001, as a complement to the expert-written and now defunct Nupedia, and now is operated by the non-profit Wikimedia Foundation. It was created by Larry Sanger and Jimmy Wales; Sanger resigned from both Nupedia and Wikipedia on March 1, 2002. Wales has described Wikipedia as "an effort to create and distribute a multi-lingual free encyclopedia of the highest possible quality to every single person on the planet in their own language".[1]

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neilep · « **Reply #163 on:** 15/11/2006 15:34:20 »

X-band

A band of radio frequencies extending from 5200 to 10 900 MHz

neilep · « **Reply #164 on:** 15/11/2006 15:37:52 »

The Y chromosome is the sex-determining chromosomes in humans and most other mammals. In mammals, it contains the gene SRY, which triggers testis development, thus determining maleness.

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Karen W. · « **Reply #165 on:** 15/11/2006 15:58:34 »

Zodiacal constellations:The 12 constellations used in astrology.

Mjhavok · « **Reply #166 on:** 15/11/2006 16:45:15 »

Alpha Helix

Karen W. · « **Reply #167 on:** 15/11/2006 17:16:27 »

Cool!

Big Crunch-A possible future reversal of the big bang.

iko · « **Reply #168 on:** 15/11/2006 17:44:35 »

Clostridium tetani

www.humanillnesses.com/original/images/hdc_0001_0003_0_img0264.jpg
http://medinfo.ufl.edu/year2/mmid/bms5300/images/a5.jpg

ikod

Karen W. · « **Reply #169 on:** 16/11/2006 03:34:47 »

Doppler shift-The "police siren" effect,when waves propagated by a moving body have their wavelength stretched as the body moves away.

Mjhavok · « **Reply #170 on:** 16/11/2006 11:33:21 »

Endotoxin or Exotoxin

Karen W. · « **Reply #171 on:** 16/11/2006 16:27:53 »

Flocculi: Patches on the suns surface based on the principal of the spectrascope. Bright Flocculi are composed of calcium, dark flocculi are made up of hydrogen.

iko · « **Reply #172 on:** 16/11/2006 19:13:42 »

GVHD - Graft Versus Host Disease

acute and chronic reactions of donor's
T-lymphocytes against recipient's cells:
skin, gut, liver, CNS, eyes...

It could be easily prevented by removing
T-lymphocytes from the stem cell graft...
but if you do that, the probability of
either recurrence of leukemia or graft failure
increases significantly.

A new debilitating disease seems to keep
stalling the previous ailment.

ikod

neilep · « **Reply #173 on:** 16/11/2006 19:51:01 »

Helioseismology

The study of the Sun's interior by measuring oscillations (ripples) as they appear at the surface. The oscillations are caused by sound waves that originate at different depths inside the Sun. By measuring their travel times and the distance they travel, scientists can study conditions in the Sun's interior.

Karen W. · « **Reply #174 on:** 17/11/2006 06:32:14 »

Ionosphere: The region above the stratasphere,from about 65 miles up to about 800 kilometres. Ionization of the atoms in this region produces layers which reflect radio waves , making long-range communication over the earth possible. Solar events have effects upon the ionosphere, and produce ioospheric storms;on occasion, radio communication is interrupted.(Phiips Atlas Of The Universe Sir Patrick Moore )

iko · « **Reply #175 on:** 17/11/2006 11:10:33 »

Rita Levi Montalcini

http://cordis.europa.eu/news/images/20061114_4.jpg
http://www.med.unibs.it/~airc/ngf.gif

Nobel Prize 1986.

ikod

Karen W. · « **Reply #176 on:** 17/11/2006 13:34:01 »

Mitosis - The type of cell division that creates two identical cells.

neilep · « **Reply #177 on:** 17/11/2006 15:24:02 »

Narcolepsy is a neurological condition most characterized by Excessive Daytime Sleepiness (EDS), episodes of sleep and disorder of REM or rapid eye movement sleep. It is a type of dyssomnia.(sleep disorder)

science_guy · « **Reply #178 on:** 17/11/2006 16:32:06 »

optometrist

Karen W. · « **Reply #179 on:** 17/11/2006 16:51:14 »

Paleomagnetism - A record of the Earth's magnetic field preserved in ancient rocks at the time of their formation.

A-Z of AVIONICS

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