Can dark matter form a black hole, as regular matter can?

If so,would there be a detectable difference (from our reference point) between the two types of black holes?

And would the singularity at the center of the DM black hole not interact with regular matter, except gravitationally?

I have a 'BrainStorm Idea' here to share for the 'Electric Cars' industry in general (Tansportation Craft Vehicles-Boats-Planes-Etc.) which will allow for much longer distances coverage before recharges stops and minimizing downtime exponentially. As Follow:

A modified addapted (onboard) 'wind

I wish to develop a compact and portable, low budget, gyro stabilized mount for use with telescopes that weigh less than 15 pounds.

Tripods and other types of mounts that are light and compact enough to be portable do not have the mass properties and rigidity necessary to support high magnifica

Dear Forum,

Thank you in advance for your help, suggestions or comments. All are welcome to reply, even if you're not working in the drilling industry.

You can view the current website here:
hollypipe.com
I built this website about a year ag

any supplier of digital read out permanent magnet GAUSS METER in punjab or northern region of country.

In a project we intend to use a cooling tower with sewater make up. But we have concerns about salt emission to atmosphere -from the point of corrosion effect- and also salt emission to sea - from the point of environment-.

Can anybody share their experience about seawater make up cooling tower

its to be debated that the us administration has allocated enormous amount of

funds to renovate the existing and build the new wind mills in the country but

little did they realise that instead of depending on the force of wind why not

any other alternative cheap and affordable source

what are the diffrent possiable reasons for axil vibrations in Jack oil pump application v1 mounting DC motor in no load condition testing at test bed

Greetings,

I have a question about running an esp motor off a vfd. My output frequency and motor speed are never the same, is this normal, if so why? If I tune the drive to rated motor speed(3450), my output frequency is 3450, but my motor speed is lower. The drive is a Yaskawa F7. Any resp

Hi all, hope you can help,

I have an incoming supply of 2 x 160A TP&N MCCB it supplies an external bypass unit which contains 2No 200A TP&N MCCB's, from there it supplies a 2 x 30KvA UPS via 160A Fuses, the output of the UPS returns to external bypass switch via another 200A TP&N MC

I would like to know that how i can improve the tan delta value of a power transformer?

W. Lincoln Hawkins was a chemist who helped popularize telephone service by co-inventing an inexpensive plastic insulator for telephone cables. The holder of nearly 150 patents, Dr. Hawkins was also the first African-American scientist at AT&T Bell Labs. He was a recipient of the National

All,

I am trying to locate a diagnostic equipment that is universal for both trucks, cars, and heavy duty equipment. Most of those located are just code reader and is not detail enough. any ideas of such tool for Automechanic trouble shooting?

hi my engr. fellowz plz tel me which kind of sensors should i use if i m using stepper motor and 8051 microcontroller for the purpose of pick n place.

Considering the numbers who joined online social networks like Facebook, MySpace, and Twitter, the phenomenon seems to be going well. But an article in USA Today tells of some who joined but now are dropping out — in many cases, to reclaim personal time and privacy. A related video tells how F

Since 2003 total daily newspaper circulation has fallen 30%; a decline of about $8 billion in revenues. The economic recession further cut advertising revenue and subscription rates, forcing many newspapers to go to three-times per week; magazines going from monthly to bi-monthly. Some found salvati

News abounds of economic growth in late 2009 and first quarter 2010. Will your company make a major automation purchase this year, or wait for more positive indicators?

The preceding article is a "sneak peek" from Robotics Systems, a newsletter from GlobalSpec. To stay up-to-date and informed on in

Difference between Pressure Sustaing valve and Pressure reducing valve

I'm studying for the electrical PE exam in Power. In my study book, one of the example problems is looking for the short circuit current and states (and I quote) "Using an arbitrary base of 100MVA for Sbase..."

When studying sample questions from the NCEES, the same type problem came up, an

Hi All,

I am planning to carry out hydraulic test (Water) for piping system. Hydraulic testing pressure is 280 bar. Could anyone help me on following issue.

1. I know, we have to avoid the entrapped air in the pipe system, How can I minimise air in the system, Do I need to carry out nitrog