how to calculate hex head metrec bolt & nut weight along with length

From Geeks are Sexy Technology News:

Here's Newton's laws at work for your amusement once again.Warning: Do not, I repeat do not try this at home.For those of you who are not patient, the fun starts at 0:50.

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From Technology Review RSS Feeds:

Black holes are among the most exotic of astrophysical objects and consequently one of the most deeply studied. White holes, on the other hand, are largely ignored by astrophysicists. So it's time, therefore, to change the balance with some deeper

From Wired Top Stories:

It wouldn't be DefCon without a noted lock hacking team demonstrating the gross insecurity of some of the latest security locks, such as a biometric lock that could be easily cracked with a paper clip. This year the three-member team of lock hackers, Marc

From Neatorama:

British designer Tamsin van Essen has created ceramic cups that appear to have been colonized by various bacteria. Pictured is streptococcus. No matter how thirsty I was I couldn't be convinced to drink from that vessel . The raw clay for these cups was contamina

Dear Members,

Is there any international recognized code for machine ( pumps, turbines..) in Nuclear sector or if are valid the normal API rules with various amendment ?

Regards,

Hi

I am looking for help and information to calibrate a NDIR co2 gas sensor for temperature and pressure compensation using the beers law extension coefficients.I have found some limited information through going through the web.

This is straight through gas cell made in the lab wi

I'm designing some form tools for machining hydraulic ports.

I was wondering if some body could tell how you would use an on delay timer as an off delay timer. I know how both timers work, I want to be able to use the on delay timer i have to function like the off delay timer. A circuit diagram would be handy cheers

Just a Monday morning curiosity question, who are the mystery guests? they outnumber us nearly 6 to 1. With 204 people logged in and only 34 with an identity, am I missing something?

What is the purpose of air seal inside the tube bundle for a fin fan, how is it constructed and where is it located?

From Boing Boing:

Kite designer Tim Elverston sent in this video through Submitterator, showing his friend making a piece of kite line move "magically" with the help of static electricity. Also, they got shocked. If you listen to the video through headphones, you can clearly hear a

From Popular Science:

Some big news dropped quietly during a recent TED talk in the UK: Kepler co-investigator Dimitar Sasselov jumped the gun -- and likely angered a few colleagues -- with one of his presentation slides, letting the audience (and the world) know that Kepler has id

From Los Angeles Times:

The world's phytoplankton appear to have been disappearing at a rate of about 1% a year for the last century, researchers announced Wednesday, a disturbing long-term trend for the microscopic algae that form the basis of the marine food chain and produce muc

From Fast Company:

Boeing's 747-8 jumbo jet may represent the best of what engineers have to offer now, but Airbus has reached 40 years into future and come back with a design that barely resembles the aircraft of today. The Concept Plane, revealed this week at the U.K's Farnboroug

From EurekAlert! - Breaking News:

In an innovation critical to improved DNA sequencing, a markedly slower transmission of DNA through nanopores has been achieved by a team led by Sandia National Laboratories researchers.

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An article in Mechanical Engineering by scholar N.J. Slabbert argues that the U.S. has lost its innovative edge, largely because engineers are no longer serving as visionaries for society, as they did in times past. For example, one major public policy arena — the U.S. Senate — counts on

From Discovery News - Top Stories:

The Mississippi River may be mightier than anyone ever imagined. It may have been behind the baffling 1811-1812 earthquake in the New Madrid Seismic Zone, a region of Earthly unrest where by rights no earthquakes should be found.

Read th

From CNET News.com:

This week GM revealed the price of its Chevy Volt electric car as the automaker looks to draw buyers looking for a more eco-friendly mode of transportation. With just a 40-mile range on a charge from an electric power source for the Volt, and about 100 miles

From NYT > Science:

Many Europeans recoil at the very idea of cloning animals. But a handful of breeders in Switzerland, Britain and possibly other countries have imported semen and embryos from cloned animals or their progeny from the United States, seeking to create more consiste