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Topic: 20 millionths of an angstrom

	Packet: SESCH (Site not responding. Last check: 2007-10-30)
		Consequently, an N at auroral latitudes in the sunrise sector does not have the same absolute meaning as an N in the after- noon sector at low latitudes.
		An abrupt decrease, of at least 10%, of the background galactic COSMIC RAY intensity as observed by neutron monitors.
		An extended emission feature of an ACTIVE REGION that exists from the emergence of the first magnetic flux until the widely scattered remnant magnetic fields merge with the background.
	www.wolfswords.com /packet/packet_sesch.html (5917 words)

	The Space Telescope: Scientific American 1982
		An essential element in ensuring such a long lifetime (and in keeping costs within reasonable limits) is the availability of the space shuttle, which not only will deploy the telescope but also will service it on a regular basis.
		Ground-based astronomy had entered an exciting ``olden era'' with the discovery of phenomena such as quasars, the cosmic microwave background radiation and pulsating neutron stars, and few people were prepared to devote the many years of effort needed to develop a facility as complex and costly as a large space telescope.
		This is an extraordinarily small linear dimension for a star; indeed, it is very close to the diameter the sun would have if it were compressed to such a high density that it formed a fl hole.
	www.stecf.org /poa/FOS/hstsciamerspitzer.html (8399 words)

	Talk:Orders of magnitude - InformationBlast
		I replaced angstroms with nanometres, and gave microns their SI name (micrometres), but it still has four different units being used to measure distances (metres, nanometres, astronomical units and light years).
		For an influential encyclopedia there might be an aspect of a sort of Heisenberg uncertainty principle, obviously.
		Similarly, an article on a building will mention its height, but if there is to be a "list of the heights of every tall building in the world", then putting it in 1 E2 m would bury everything else in that list, thereby destroying its usefulness for anything except buildings.
	www.informationblast.com /Talk:Orders_of_magnitude.html (5147 words)

	Komag, Inc. - The Manufacturing Process (Site not responding. Last check: 2007-10-30)
		During the sputtering process microscopic magnetic layers are successively deposited on the disk - these layers ultimately provide the magnetic storage capacity for data.
		The disk is finished with an ultra-thin (<20 Angstrom) carbon overcoat.
		The properties of this final overcoat barrier are equivalent to laying a fine film of diamond over the surface.
	www.komag.com /technology/process.html (460 words)

	The Business of Nano - PA Nanotechnology Conference 2005
		An angstrom is one-tenth of a nanometer, which itself is a billionth of a meter.
		An image is then created by measuring the number of electrons that pass through the systems, analogous to how a slide projector works.
		A nanometer is one millionth of a millimeter, or the span of ten hydrogen atoms.
	www.pananoconference.org /news.html (9180 words)

	Science and Christianity: Chapter 2. A Lesson in Astronomy
		In this chapter will be given first an overview of the entire universe with an attempt to give the reader some comprehension of its size.
		This is one millionth of a meter or one micron.
		This is because the diameter of the known universe is around 20 billion light-years and recall that the size of the Galaxy is 100,000 light-years.
	www.faithreason.org /farmsc2.htm (3063 words)

	Ultraviolet (UV) Disinfection - Technical Information (Site not responding. Last check: 2007-10-30)
		UV radiation is measured in millionths of a millimeter, i.e., Angstromunits (one Angstrom unit wavelength equals one hundred-millionths of a centimeter), and like visible light, it primarily has a surface effect.
		Ultraviolet lamp radiation of 2537 Angstrom units (or 254 namometers) wavelength must hit the microorganism to inactivate it, and each microorganism must absorb a specific amount of energy to be destroyed.
		An algaecide should be used periodically to prevent any microscopic spores from adhering to the sides and bottom of the pool, preventing them from entering the U.V. purifier, where they are destroyed.
	www.wastewaterdepot.com /uv_technical.html (2446 words)

	The structure of a cholesterol-trapping protein
		At this speed, electrons emit extremely bright x-ray light that is directed along a beamline toward an object that researchers want to investigate at the atomic level, such as a crystallized protein.
		It's an elegant way to image complex proteins, provided the element is successfully embedded into the crystal — which is where Henderson's work comes in.
		Because the average length of a protein bond is about 1.5 angstroms, or 1.5 hundred-millionths of a centimeter, these super-bright photons are excellent sources of x-rays capable of probing the intricacies of protein molecules.
	www.lbl.gov /Science-Articles/Archive/ALS-protein.html (1063 words)

	Surface Finishes provides state of the art lapping, optical polishing, low stress grinding, diamond machining and ...
		The new microscope is expected to have a resolution of 0.5 angstroms.
		The design called for a margin of error of no more than 50 millionths of an inch, but the institute members were able to reduce that error margin to 20 millionths of an inch, said Greg Panek, head of the institute's voluntary effort.
		They held flatness to one quarter of a wavelength of a helium neon laser, equal to five millionths of an inch.
	www.surfacefinishes.com /article3.html (1061 words)

	Solar Activity - ADEMS BUILD Version 01 (Site not responding. Last check: 2007-10-30)
		An X-Ray-flux solar flare detected in a single pair of narrow bands is assumed, less and less, to tell a "bigger" story, mainly because many other kinds of events occur in which little or no X-Ray activity is detected.
		An "expended" MIR supply craft, a Progress, was successfully "ditched" in the Pacific over the past couple of days, thus "proving", they hope, that the Russian space authorities can handle routine operations involving the disposition of "simple" space-craft.
		An optical flare was correlated to this Region at 2001 Mar 03 0436 Z, but since that time it hasn't been associated with other significant activity.
	www.adems.org /anatomy/build01/solacty.htm (17657 words)

	AstroAlert - Sun-Earth Reports
		The Sun is hidden by an occulting disc (the gray circle in the middle of the image).
		An impressive sequence of prominence eruptions was caught by the Solar and Heliospheric Observatory (SOHO) on 25 October.
		A large coronal hole (an area where magnetic field lines from the Sun don't loop immediately back to the Sun, but are instead dragged out into interplanetary space) is visible in the northern polar region with an extension or "tongue" dropping down toward the middle solar latitudes.
	www.spacew.com /oldastroalerts (11568 words)

	Solar Observing FAQ
		An optical window is fitted to the front of the tube, which is coated on its back (primary-facing) surface with a 95% rejection coating.
		Thus, the light passing through the filter at an angle of 1 degree peaks a few tenths of an angstrom away from the H-alpha line (in the direction of shorter wavelengths), and drops to half intensity.3 angstroms from this unwanted peak.
		An objective and a positive lens is a Galilean telescope, and that means the image is magnified, thus increasing field angles.
	jeff.medkeff.com /astro/faq (16022 words)

	HeartPoint: Cholesterol, Advanced Discussion
		LDL particles less than 258 Angstroms can get through the holes between cells quite easily and are therefore can be quite "atherogenic" (that is, cause blockages in the arteries).
		Those with HDL2b's that make up less than 20% are at higher risk, those that have greater than 28% have an optimal pattern.
		These studies are available from the Berkeley HeartLab (www.berkeleyheartlab.com), which makes an active effort to recruit physicians to use their services.
	www.heartpoint.com /cholesadvanced.html (1158 words)

	Surface Finishes provides state of the art lapping, optical polishing, low stress grinding, diamond machining and ...
		Crewe came to the University of Chicago in 1955, directed Argonne National Laboratory from 1961 to 1967 and became a dean of the physical sciences division a few years later.
		Crewe's old microscope generates 30,000 volts of electricity and will resolve images of just 2.4 angstroms (an angstrom is equal to four-billionths of an inch!); the Berkeley instrument is 30 feet tall, generates a millions volts of electricity and resolves to 1.6 angstroms.
		The parts were produced by the precision metalworking company to some demanding specifications-20 millionths of an inch.
	www.surfacefinishes.com /article6.html (1453 words)

	Tech Specs
		An upper piece of glass merges with lower, upper edges melt in, but remains humped.
		An additional problem is that the measured COE is done at a much lower temperature (20-300C in the table below) than the temps at which glass develops strain problems.
		It is estimated that an increase in the percentage of outside cullet from the average (20%) to 50% would reduce glass melting furnace energy requirements about 6.8%.
	www.cowtown.net /mikefirth/techspec.htm (3859 words)

	Solar Weather History
		The biggest is AR 9906 near disk center (S15W02), with an area of 640millionths of the solar disk and a beta-gamma-delta magnetic configuration.
		AR9893, second largest at 400 millionths is another beta-gamma-delta region now at the NW limb (N20W67); it produced an M3.7 event at 2340 UT yesterday.
		A coronal hole is an area on the sun where the magnetic field lines are open and in a magnetogram, you see only on magnetic polarity in the area where the hole lies.
	solar-center.stanford.edu /weather_hist (11064 words)

	GT Research Horizons: Electron Microscope Facility
		A fl-and-white image appears on the monitor to his right, revealing a jumbled pattern of ridges and valleys that covers the surface of a tiny carbon nanosphere barely a quarter of a micron in diameter.
		"We want to play an important role in many research programs going on across Georgia Tech, and to promote projects across schools and across other divisions of campus," explains Wang, who is director of the Electron Microscope Facility and an associate professor in the School of Materials Science and Engineering.
		After the powerful beam of electrons passes through the sample, it is focused and projected onto either a monitor or photographic film to provide an image of the structure.
	gtresearchnews.gatech.edu /reshor/rh-sf97/microscp.htm (906 words)

	LU Physics Calendar - 1998-99
		This presentation will consider ultrashort laser pulses and their use to prepare molecules in novel time-dependent states, through which vibrational and rotational motions can be probed directly in real time.
		This talk will consider the invention of the laser and the remarkable number of uses in daily life, including medicine, fiber optic communications, information storage, supermarket check-out, art restoration, and science.
		Modern modelocking technology has made possible the production of femtosecond laser pulses, or pulses with a time duration of only millionths of a billionth of a second.
	www.lawrence.edu /dept/PHYSICS/other/events_9899.html (1067 words)

	[No title]
		A indices range from 0 (very quiet) to 400 (extremely disturbed).
		An A index of 30 or greater indicates local geomagnetic storm conditions.
		Missing A- and K-indices are shown as -1.
	www.sec.noaa.gov /ftpdir/indices/old_indices/README (514 words)

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