Jump to content

Dr. Nick Riviera

Senior Member
  • Posts

    9110
  • Joined

  • Last visited

  • Days Won

    2

Everything posted by Dr. Nick Riviera

  1. ahh nnoo if you weld it the area around it becomes brittle
  2. sorry :(" :-" is the text going to be rasterized , couldnt you just do it elsewhere and printscreen it / copy paste it in? ?
  3. just for the record t-raptors are alu so welding will be difficult
  4. its not uci at all , just a riding video , trials and dirt jumping and street . the idea was to make a longer video with rider type sections :S ive got a lot of film over the past year so thats in no short supply
  5. pfft my cranks must be broken they dont move an inch side to side :blink:"
  6. the grass is green in black and white pictures :blink: vinco looks ncie but maybe its too long for street?
  7. ok , i finally feel my riding and editing skills allow for me to make a video post it on here and not get ridiculed , so does anyone have anything that i need to know or should do before attempting this , its gonna be about 15 mins max . any tips or help greatly appreciated
  8. awww i wanted it to say dont be a dick on it :blink: ssweet ride , must be a new concept riding a bike that dosent creak :(
  9. diamond back ones? 12 quid from halfords
  10. 213.232.110.31:27035 uk2 dust 2 anyone up to play now? im there im playing as oSo negro
  11. mike deere has no worries of becoming a freelance photographer , jon have you thought about rather than searching for the job , why not create one by starting something like a magazine or a website. just need to keep ontop of happenings in the trials world (Y)
  12. its the ginger hair fools most people mate
  13. Helium (He) is the second lightest element (hydrogen being the lightest) with a gaseous specific gravity of 0.138. It is a colorless, odorless, tasteless inert gas at room temperature and atmospheric pressure. Its boiling point is -452.1°F (-268.9°C) at atmospheric pressure. Helium is present in dry air at a concentration of 0.0005%. Helium is one of the noble gases. Like the other noble gases, helium is chemically inert. Reactions with other elements occur only with difficulty and the resulting compounds are quite unstable. Helium is the most difficult of all gases to liquefy and is impossible to solidify at atmospheric pressure. These properties make liquid helium extremely useful as a refrigerant and for experimental work in producing and measuring temperatures close to absolute zero. Liquid helium can be cooled almost to absolute zero at normal pressure by rapidly removing the vapor above the liquid. First discovered in the spectrum of the sun's corona during an eclipse in 1868, helium was first isolated from terrestrial sources in 1895. In 1907 British physicist Sir Ernest Rutherford showed that alpha particles are the nuclei of helium atoms. Helium is the second most abundant element in the universe, after hydrogen; however, it is rare on earth. Its principal source is natural gas wells where the helium is extracted from pockets in the crude natural gas stream and purified. It is so light that once released it escapes the earth's atmosphere and cannot be recovered. Helium is widely used as an inert gas in the arc welding process and as an inert gas in the production of reactive materials. Its permeation rate and ease of detectability make it an ideal medium for leak detection. Also, its low specific gravity and nonflammability allow its use in lighter-than-air applications such as the filling of balloons and blimps. To reduce risk of the bends, a mixture of helium and oxygen is used as a breathing gas for deep-sea diving, since helium is less soluble in human blood than nitrogen. Helium is also used in the pressurizing of rockets before takeoff and the pressurizing of tanks of rocket fuel. Liquid helium is used in superconducting magnet applications, including magnetic resonance imaging (MRI). DOT Information DOT Name: Helium DOT Hazard Class: Nonflammable Gas DOT Label: Nonflammable Gas DOT ID No.: UN1046 CAS No.: 7440-59-7 Valve Outlet: CGA 580 Physical State in High Pressure Cylinder: Gas Major Hazards: High Pressure Suffocation Fire Potential: Non-Flammable Physical Properties of Helium Formula: He Molecular Weight: 4.003 lb/mol Specific Volume at 70°F and 1 atm: 96.71 ft3/lb (6.00 m3/kg) Specific Heat: 4.97 BTU/lbmol-deg F@ 70 deg. F Specific Gravity: .138 Gas Density: .010346 lb/ ft3 @ 70 deg. F. 14.7 PSIA Boiling Point: Temperature: -452.1 deg. F (-268.9 deg. C) Liquid Density: 7.804 lb./ft3 Latent Heat: 8.778BTU/lb. Critical Point: Temperature: -450.3 deg. F Pressure: 33.2 PSIA Melting Point: Temperature: 455.8 deg. F Pressure: .0735 PSIA now be quiet all of you
  14. THOSE CTS WERE BLATANTLY HACKING OMFGNOOBZORX nice llittle round there not playing anymore tonight though (Y)
  15. typo , and to add content , what are the views on a front marta sl?
  16. how the hell did you manage to film that yet none of the "pro photographers " could get a decent picture from it ?
×
×
  • Create New...