Home | General | Engineering News | Astrophysicists try to weigh a black hole

Engineering News

Latest news of interest to engineers. Sourced from GlobalSpec's Engineering News

Previous in Blog: A One-Storey Skyscraper.

Next in Blog: How it's Made: Firefighter Hat

Rate this

Comments: Nested

Astrophysicists try to weigh a black hole

Posted May 21, 2007 3:35 PM

From MSNBC.com: Space News:

Astronomers can't see black holes. And they definitely can't go out and grab a piece of one to measure its mass. So how do they weigh them?

Read the whole article

Send to a friend Digg this Add to del.icio.us

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Join CR4, The Engineer's Place for News and Discussion!

Previous in Blog: A One-Storey Skyscraper.

Next in Blog: How it's Made: Firefighter Hat

You might be interested in: Desktop Personal Computers, Handheld and Portable Computers, Computers, All Types

"It isn't life that matters, it's the courage you bring to it." -- Sir Hugh Walpole

All times are displayed in US/Eastern (EST) (Register to change time zone)

©2005-2009 GlobalSpec. All rights reserved.
GlobalSpec, the GlobalSpec logo, SpecSearch, The Engineering Search Engine
and The Engineering Web are registered trademarks of GlobalSpec, Inc.
CR4 and Conference Room 4 are registered trademarks of GlobalSpec, Inc.
No portion of this site may be copied, retransmitted, reposted, duplicated or
otherwise used without the express written permission of GlobalSpec Inc.
350 Jordan Rd, Troy, NY, 12180

	Got Something to Say?

	Search this Section
	General:

	Search this Blog
	Engineering News:

	Search all of CR4

	Recent Blog Entries
	Large Hadron Collider reboots, makes first protonic bang! For Search, Murdoch Looks to a Deal With Microsoft British Car Aims for 1,000mph Record Astronauts to Spend Last Day At Space Station Beams Collide in Big Bang Machine Spain mandates affordable broadband for all Astronaut Self-Portrait Scientists engineer greener plastics Indian engineer invents device to stop rampaging elephants Cheap 3D Solar Cells Are 6x More Efficient, Work Underground Show all Blog Entries

	Blog Tags
	2 Time Dimentions 2B R B1 9 2 5 B4 1N7 aircraft wings animal control atomic structures batteries Boomerang BPO Brazil orange picking competition business process outsourcing capital investment op. car CCFL compact fluorescent light bulbs Computer Virus Concept E El Sayed Sabry Energy energy source fences without wire or posts Florida citrus picking losses frames mini clips trailers Free energy frequency Fruit picking invention fuel cells games codes tools gadgets gear golf clubs gps fences grand canyon H Howward hurricanes I AM B 4U I CU 4U UC2 Internet access IT Kelly labor omnia lasers LEGO Light Polluion effort Math: E=Mc2 mini club car overhead loader N navy old flame OLPC ONE O' N ONE OneWebDay2008 orange picker panasonic pasma Plugs potato plastic ppp railgun robot evolution robots SaaS sensors Sock Vendor software as a service solar energy spain's solar plant SS Stonehenge ancient ruins Tapped In Trike Tunguska Event U Units USER virtual fences Weather Models WIG wikipedia wireless cattle fences zombie

CR4 Sections

	Automotive
	BioMech & BioMed
	Chemical & Material Science
	Civil Engineering
	Communications & Electronics
	Education
	Electrical Engineering
	Engineering Careers
	General
	Instrumentation
	Manufacturing
	Mechanical Engineering
	New Technologies & Research
	Software & Programming
	Sustainable Engineering