Black Hole
Black Hole
Modern astronomy has produced a theory about the life of stars in which the fate of a star crucially depends on how massive it is. Lighter stars might end as red dwarfs, and heavier stars as enormously dense but tiny neutron stars. The heaviest stars collapse in upon themselves, creating black holes. Black holes are called black because the gravitational force associated with them is so strong that no light can escape. The infinite gravitational attraction at the edge of an event horizon such as a black hole not only warps space but also warps time for the hypothetical observer near the black hole.
See also Astrophysics; Cosmology, Physical Aspects; Gravitation; Singularity
mark worthing
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USING TECHNOLOGY TO IMPROVE PERFORMANCE:ROGER W. BAKER
Transcript from: Congressional Testimony; 12/10/2009; 700+ words
; ...the CIO for aDepartment level federal government entity. The consolidated authorityand responsibility of this organization are key in effecting the changesVA is making. Second is a senior management team, from Secretary Shinsekion down, that understands...
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USING TECHNOLOGY TO IMPROVE PERFORMANCE:BRAD DOUGLAS
Transcript from: Congressional Testimony; 12/10/2009; 700+ words
; ...monitored. The state had few, if any, tracking systemsof its key assets, and as a result we had no idea how many state buildings...which revamped the state`s Procurement code, introducingsuch key changes as the ability to negotiate on Request for Proposal...
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DRINKING WATER:MARY A. FOX, PHD, MPH
Transcript from: Congressional Testimony; 12/10/2009; 700+ words
; ...population exposures are controlled throughappropriate long-term containment and management. Human healthrisks are reduced or eliminated if human exposure is reduced oreliminated.Key points:Coal combustion waste is complex mixture that c
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DERIVATIVES AND SYSTEMIC RISK:BLYTHE MASTERS
Transcript from: Congressional Testimony; 12/2/2009; 700+ words
; ...creation. We hope the Committee will considerthe costs and benefits of proposals as they formulate their approach. Twoof the key legislative proposals to reform the market are clearing andexchange trading requirements, and I will address each in turn...
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SENSENBRENNER URGES IPCC TO EXCLUDE CLIMATEGATE SCIENTISTS
Transcript from: Capitol Hill Press Releases; 12/8/2009; 700+ words
; ...surroundingthe release of such private communications, the contents of many of thee- mail exchanges involving prominent and key contributors to the IPCCFourth Assessment Report and earlier IPCC Assessment Reports are trulyshocking. Your statement emphasizes...
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Transcript from: Washington Transcript Service; 12/10/2009; 700+ words
; ...These two initiatives should spur hiring. Earlier this week, President Obama announced a new job creationagenda with three key initiatives to accelerate job growth. First, weneed to focus on small businesses. Small businesses are the engine ofthe American...
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Transcript from: NPR Fresh Air; 12/4/2009; ; 700+ words
; ...You certainly can't guess it from how he takes the news, when Grace catches him drunk in the middle of the night, returning keys to his brother's truck. (Soundbite of movie, "Brothers") Mr. JAKE GYLLENHAAL (Actor): (As Tommy Cahill) Grace...
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Solving Health Care Problems By Design
Transcript from: NPR Morning Edition; 10/9/2009; ; 700+ words
; ...Well, this is where the participation of the people themselves that are going to change in the design of the new approach was key. And we see this all the time, don't we, in larger organizations, that when something's designed on the outside and then...
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For December 11, 2009, CBS
Transcript from: CBS Morning News; 12/11/2009; ; 700+ words
; ...2004 with Blackwater guards routinely playing central roles in the raids. The CIA says it uses contractors as law permits.A key congressional vote on legislation to overhaul the way Wall Street operates is expected today and Whit Johnson is in Washington...
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SIC 2076 Vegetable Oil Mills, Except Corn, Cottonseed, and Soybean
Encyclopedia entry from: Encyclopedia of American Industries
...high-lauric acid canola was being produced. Lauric acid, previously only available from coconut or palm kernel oil, is a key ingredient in soaps, detergents, lubricants, cosmetics, and confections. The U.S. typically produces less than 10 percent...
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SIC 2092 Prepared Fresh or Frozen Fish and Seafoods
Encyclopedia entry from: Encyclopedia of American Industries
...processing operations and a greater use of fish and shellfish raised by aqua cultural means, vertical integration was seen as the key to a profitable restructuring of the American fish and seafoods processing industry. Some industry observers felt restructuring...
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SIC 2531 Public Building and Related Furniture
Encyclopedia entry from: Encyclopedia of American Industries
...back to the late nineteenth century. During this period, the Industrial Revolution and the urbanization of America played a key role in the development and growth of the industry, as a variety of new demands for public-use furniture developed. For example...
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SIC 2542 Office and Store Fixtures, Partitions, Shelving, and Lockers, Except Wood
Encyclopedia entry from: Encyclopedia of American Industries
...encouraged merchants to invest in new store fixtures to keep their product displays attractive and up to date. Customization was a key word for retailers seeking a distinctive look to set them apart from their competitors. Flexibility was also important because...
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SIC 3273 Ready-Mixed Concrete
Encyclopedia entry from: Encyclopedia of American Industries
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