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Topic: Megajoules


In the News (Wed 23 Dec 09)

  
  Legendary Gamers » 8 megajoule Railgun Success
The next test prototype to be delivered this June has 32 megajoules.
The final spec for the railgun is 64 megajoules and will be completed on schedule.
The prototype fired at Dahlgren is only an 8-megajoule electromagnetic device, but the one to be used on Navy ships will generate a massive 64 megajoules.
www.legendarygamers.net /index.php?name=News&file=print&sid=918   (870 words)

  
 Sandia National Laboratories - News Releases
The accelerator, known as PBFA-Z (Particle Beam Fusion Accelerator, Z-Pinch version), produced increasingly powerful bursts of energy -- 1.0 megajoules in early October, 1.2 megajoules in mid-October, and 1.8 megajoules in November.
A megajoule is a million joules -- a unit of energy.
Exceeding the production of 1.8 megajoules of X-rays, while an important milestone, is simply one more step in a series of accelerator improvements based on continually improving Sandia expertise in high-energy density physics and pulsed-power engineering that stretches back for more than a decade.
www.sandia.gov /media/zpinch.htm   (1392 words)

  
 Energy of the Sun around us   (Site not responding. Last check: 2007-10-22)
The solar radiation - radiation energy of the Sun - is the main power source of atmospheric processes; it is measured by a heat quantity and expresses in megajoules on 1 sq.m.
By red lines with digits the isolines of a total solar radiation in megajoules on 1 sq.m are indicated.
The calculations demonstrate, that quantity of a solar energy, which one reachs the ground’s surface in Ukraine, nowadays considerably prevails existing usage of energy from borning of coal, oil, gas and obtained from atomic power stations.
www.solarenergy.iatp.org.ua /pageseng/solarenergy.htm   (410 words)

  
 Innovations of the Next Half Century
People do talk about biomass energy production, but its efficiency is twenty times less than the 400 megajoules per square meter per year that I was presuming.
At 20 megajoules per square meter per year, a three terawatt rate requires 400 million hectares of surface (one billion acres), which is more than twice the areas of US arable land.
At 400 megajoules per square meter per year a three terawatt rate requires 20 million hectares of surface (50 million acres), which is a bit more than 10% of the US arable land.
www.rattlesnake.com /notions/innovations-next-half-century.html   (845 words)

  
 AR.net >> Discussion Forum >> RE: Is the ALF a cult?
Assuming the energy value of grain is 12 megajoules (and dry matter is 90%) and that of hay is 8.5 megajoules (87% dry matter), then 1 kg of grain is approximately equal to 1.5 kg of hay in feeding value.
For example, using 12 megajoule (MJ) grain and 8.5 MJ hay, and assuming the hay is 85% dry matter (DM) and the grain is 90% DM, the 60 MJ requirement for the dry cow in Table 1 can be supplied from 9 kg hay or 4.5 kg hay and 3 kg grain.
The quantity of hay in the table assumes all requirements are being met from hay and the hay is of reasonable quality (8.5 megajoules per kg.
www.animalrights.net /59997   (726 words)

  
 Joules, Kilojoules and Megajoules   (Site not responding. Last check: 2007-10-22)
You also learnt that 1 joule is quite a small value and so the kilojoule or megajoule are often better units to use when measuring energy (recall, you can give two eggs approximately one joule of potential energy by lifting them 1 metre above the ground - not very hard is it!).
Relating the kilojoule and megajoule back to the basic unit for energy, the joule, is easy:
For large scale energy conversion, for example the energy conversion that goes on at an electric power station, even the units of kilojoules (kJ) and megajoules (MJ) are not practical.
network.ee.unsw.edu.au /~solar/htmlpages/energy4.html   (252 words)

  
 Star Wars vs Star Trek Technology: ST Power Generation
Without knowing why they used megajoules as units (particularly in a fact-checked document as opposed to a stray spoken word), we cannot determine what time factor should be applied (naturally, Federation cultists assume that the time factor is 1/s in the absence of evidence).
This may simply be incompetence; they might have meant "megawatts" but their scientific knowledge is so poor that they used "megajoules" instead; of course, this kind of incompetence casts doubt on all of their figures (spoken or written), but that should not be surprising from such a primitive society.
If we use the almost universal Federation cultist assumption that the units of megajoules are actually an error, and should be megawatts, then this means that the power requirement for achieving warp 1 is approximately 20 GW, and the power requirement for maintaining warp 1 is approximately 200 MW.
www.stardestroyer.net /Empire/Tech/Power/Power1.html   (3518 words)

  
 Stellar lab
The most powerful laser project under construction is the National Ignition Facility, a $1.2 billion facility slated for completion in 2003, in which the beam from 196 lasers will deliver nearly 2 megajoules of power to a millimeter-sized target, reproducing the temperatures within stars.
Plasma astrophysics is currently being done with machines called pulsed-power generators, which currently operate in the 0.5-2 megajoules range and are located at Sandia National Laboratories and Los Alamos National Laboratory.
Under construction is Atlas, a large pulsed power generator for studying instabilities in the various states of matter.
public.lanl.gov /alp/plasma/AtHomeStar.html   (505 words)

  
 Convert megajoules to kilojoules - conversion of measurement units
We assume you are converting between megajoule and kilojoule.
The SI derived unit for energy is the joule.
1 joule is equal to 1E-06 megajoules, or 0.001 kilojoules.
www.convertunits.com /from/megajoules/to/kilojoules   (305 words)

  
 IEER Report: Dangerous Thermonuclear Quest
Assuming a one percent efficiency in the coupling of the energy in the explosive to the fuel pellet, about one megajoule of explosive energy would be required, amounting to about 200 grams of high explosive.
Thus, one megajoule of driver energy could be stored in a volume of 0.1 cubic meter.
This is still far greater than the volume for the same energy in a chemical explosive, yet it is small enough to enable a wire-array z-pinch device using a few milligrams of D-T fuel to be portable.
www.ieer.org /reports/fusion/chap3.html   (5707 words)

  
 Missions to Venus   (Site not responding. Last check: 2007-10-22)
The optimum launch date was March 27, requiring 112 days and 6.1 megajoules per kilogram of payload.
In 1972, a cheaper Type II trajectory left on April 4, took 170 days and cost 4.1 megajoules per kilogram.
Type I trips result in communications distances of around 60 million kilometers between Venus and Earth, upon probe arrival.
www.mentallandscape.com /V_VenusMissions.htm   (335 words)

  
 Berti & Lewis Replicas - The Container and Worldtrade - Page 3
A long-haul truck uses between 0.7 to 1.2 megajoules per tonne-kilometre.
A typical freight train consumes around 0.6 megajoules per tonne-kilometre.
A ship carrying around 25,000 tonnes of cargo at 18.5 knots (which is relatively fast) uses only 0.12 megajoules per tonne-kilometre.
www.bertilewis.com /article3.html   (274 words)

  
 Starfleet Jedi: Star Wars Weapons
Blaster rifles may be relied upon for up to 10-250 kilojoules per shot.
AT-STs or squad weapons may be relied upon for 1-10 megajoules per shot.
Fighter-grade proton torpedos have a yield between 1 and 10 terajoules.
www.starfleetjedi.net /h3.html   (459 words)

  
 The Daily, Thursday, June 29, 2000. Human activity and the environment
However, energy consumption for every dollar of inflation-adjusted gross domestic product (GDP) - a measure of the energy intensity of the economy - declined during this 40-year period.
In 1961, it took about 15.0 megajoules of energy to produce a dollar of economic output.
Oil prices dropped dramatically in 1986, after which energy consumption per dollar of real GDP stabilized at around 12.5 megajoules.
www.statcan.ca /Daily/English/000629/d000629a.htm   (897 words)

  
 The Ethicurean: Chew the right thing. » Blog Archive » How green is your rice?
Pretty and Ball give an energy input for Bangladeshi “traditional deepwater rice” of 400 megajoules per metric ton (a joule is a unit of energy, and a megajoule, abbreviated as MJ, is 1 million joules; a metric ton is 1,000 kg) and 11,000 MJ per ton for California rice.
A “TEU” is a 20-foot container, so this ship carries the equivalent of 1,500 20-foot shipping containers from the Port of Chittagong, Bangladesh, to the Port of Oakland, California, an over-water distance of 14,920 km (from Port World Calculator).
For a 1,500 TEU container ship, the energy usage is 0.165 megajoules per ton per km, or 5.96 MJ to carry a 2.5 kg bag of rice from Bangladesh to Oakland.
www.ethicurean.com /2007/03/18/rice-and-energy   (2902 words)

  
 [No title]
Conventional industrial electrolysis takes about 18...21.6 megajoules of electrical energy per one cubic meter of produced hydrogen, and total energy consumption including production of electrical energy itself is about 50 megajoules per one cubic meter.
One cubic meter of conditional working volume of the generator operating at optimum mode (at efficiency factor 86...98%) is able to make 3.5 cubic meter of hydrogen and 2.2 megajoules of electrical energy per second.
Because of use in the process free heat the cost of producing one cubic meter of hydrogen is decreased to $0.0038.
www.fortunecity.com /tattooine/gargoyle/32/studennikov.htm   (1950 words)

  
 The Upcoming Renaissance of Nuclear Power
The heat value of uranium used in a light water reactor is 500,000 megajoules per kilogram.
Residual oil is about 50 megajoules per kilogram; natural gas comes in at 40 megajoules.
For wood (biomass), the heat content is on average 16 megajoules per kilogram.
www.retailenergy.com /articles/nuclear_power.htm   (3172 words)

  
 cold fusion, lenr, cmns, nuclear fusion   (Site not responding. Last check: 2007-10-22)
The difference (megajoules), they announced, was much larger than what could possibly be due to any conceivable chemical process.
Nuclear fusion has been studied for decades and it was well known that a neutron or a proton is nearly always emitted from each fusion event.
The number of neutrons emitted to generate megajoules of heat would be more than sufficient to kill researchers observing the cell.
blake.montclair.edu /~kowalskil/cf/01kids.html   (986 words)

  
 Amazon.com: Megajoules   (Site not responding. Last check: 2007-10-22)
Pi Terajoule TJ Gigajoule GJ Megajoule MJ Kilojoule kJ Hectojoule hJ...
A biogenic field of 800 megajoules surrounded a Nechisti shrine on...
as British thermal units or megajoules, inputs for raw materials are...
www.amazon.com /s?ie=UTF8&keywords=Megajoules&tag=acronymfinder-20&index=blended&link_code=qs&page=1   (1147 words)

  
 Melted Arctic Ice Mystery Solved
This freshwater lake of melted ice is a thermal battery.
That is, it has absorbed 96,126,250,000 Megajoules of HEAT in the act of meting.
This energy is equal to 637 times the pair of atomic bombs dropped on the cities of Hiroshima and Nagasaki combined (15.08e13 Joules).
ecosyn.us /Temp_4/Mystery_Solved/Ice_Mystery_Solved.html   (934 words)

  
 Out of this World/Helicopter Rescue
If a soft landing is achieved for the first descent, up to 20 megajoules of energy are added to your receptors to bring them up to a maximum of 60 megajoules.
If you do not link with the mother ship, no megajoules will be added to your lander's receptors, even if a soft landing is successfully made.
The numbers at the upper right and upper left of your screen keep track of the amount of times the landers establish link-ups with the orbiting mother ship.
www.ozyr.com /o2/o2outoft.html   (640 words)

  
 Atomic Rocket: Space War: Defenses
Since the laser beam tends to be meters wide, the beam energy is in the hundreds of megaJoules.
However, under combat conditions there is no way one could focus the laser down that tiny and keep it on the same spot on the target ship for multiple seconds.
Granted the beam power required to penetrate jumps from 200 kilojoules to 20 megaJoules, but now if we have an uncertainty in the target's velocity of up to 5 meters per second it doesn't matter.
www.projectrho.com /rocket/rocket3y.html   (5092 words)

  
 unit02-sect02-les09-lessone   (Site not responding. Last check: 2007-10-22)
Repeat exercise 5 and express the energy in joules and megajoules.
To get energy in joules and megajoules, power must be expressed in watts, and time in seconds
If you look at your bill, you will find that the energy is measured in kilowatt-hours and not in joules or megajoules.
www.cdli.ca /courses/phys3204/unit02/section02/lesson09/3-lesson-e.htm   (640 words)

  
 Starfleet Jedi: Star Trek: Power Technology in the Next Generation
In order to arc through 2 meters of air, roughly 1.5 million volts of potential are required, giving an intermittant power flow of three quarters of a terawatt; it is not plausible that three quarters of the entire power grid of the ship happens to be leaking through a stray conduit.
After a failed transport of two in "The Outcast," a shuttle is down to 34%, using 10 megajoules.
As this is not enough to lift a kilogram mass - let alone a person - out of Earth's orbit, it is inconceivable that this is equal to the shuttle's total maximum fuel energy in a universe where conservation of energy is maintained.
www.starfleetjedi.net /m5.html   (2134 words)

  
 Whisper™ even better than expected release
This is the equivalent of 2.16 megajoules per kilometer.
The wind-resistance penalty had been expected to adversely impact the required energy to sustain the speed than now appears to be the case.
It would take 12.8 liter of diesel oil with the current APU to supply this amount of electric energy.
www.e-traction.com /Release_Whisper.htm   (1028 words)

  
 AR15.COM :: Forums :: Navy's rail gun gets rave reviews after Tuesdays test
another calculator puts it at 65 megajoules or roughly 88+ million foot lbs of kinetic energy.
There is no way to make it an accurate weapon because each round travels a slightly different length of barrel so has a slightly different muzzle velocity.
Originally Posted By KA3B: The prototype fired at Dahlgren is only an 8-megajoule electromagnetic device, but the one to be used on Navy ships will generate a massive 64 megajoules.
www.ar15.com /forums/topic.html?b=1&f=5&t=538150   (2620 words)

  
 Australian Department of Immigration and Multicultural Affairs Annual Report 2002-03
The practice of procuring recycled printing and copy paper is being adopted throughout the department.
The Commonwealth energy target of 10,000 Megajoules per person per annum by 2002-03 has been met by the department for three years in succession.
With the occupation of the department's new central office building in April 2003, these figures are expected to continue to improve.
www.immi.gov.au /about/reports/annual/2002-03/report81.htm   (482 words)

  
 Ranting to /dev/null: Why all cars are environmentally friendly
A horse is going to have to use energy to transport you a mile.
And as a horse weighs as much as a decent sized car, 12.6 megajoules doesn't sound too far off as an estimate.
This is a lot less than 4.5 megajoules, but it's still a decent amount of energy.
davidson.chattablogs.com /archives/022675.html   (2929 words)

  
 Letter Author: tjmoerman - Salon
Shapouri (again the most optimistic of the papers) shows 73,424 net megajoules' yield per hectare.
That's 183 trillion megajoules of petroleum per year, of which something something on the order of one-tenth goes into producing more petroleum.
So, call it 165 trillion megajoules' per year net petroleum energy.
letters.salon.com /15c632867584742e7279d439a6c3c434/author/index.html   (1134 words)

  
 INTENSITY OF ENERGY USE
But there are almost no data on actual energy service outputs per unit of energy input (lumens of light, cubic meters of air moved, computing power or use, tonnes raised in lifts, etc.).
Hence, the usual measure of energy intensity, megajoules per unit of output in economic terms (mJ/$), can be a useful indicator provided it is clear that this summarizes many processes and types of buildings.
Unit: Energy is measured in megajoules (mJ) or gigajoules (gJ) (net calorific value).
www.un.org /esa/sustdev/natlinfo/indicators/isdms2001/isd-ms2001economicB.htm   (6188 words)

  
 Energy Density of Ethanol
"Since the density of ethanol is 0.789 grams per cubic centimeter, the energy density of ethanol is 26.8 megajoules per kilogram."
Energy density is the amount of energy per mass.
The greater the value the more beneficail the source is. The common unit of measurement for energy density is megajoules per kilogram (MJ/kg).
hypertextbook.com /facts/2003/RoxanneGarcia.shtml   (317 words)

  
 [No title]
perfectgeneral RE:Impact Energy in Megajoules L55 DM63 CKEM LOSAT etc 2/9/2005 11:44:14 AM ''Estimated muzzle kinetic energy, firing the APFSDS DM 53 (LKE II) round, is around 18-20 megajoules (MJ).
The 120 mm L55 weapon is compatible with the current MBT-types in service throughout NATO, as they can easily be retrofitted.'' FROM: link Not exactly what you asked, but hey, I'm trying (very?).
RE:Impact Energy in Megajoules L55 DM63 CKEM LOSAT etc 2/9/2005 9:45:49 PM Hey Folks, The M1 tanks original British L7 gun was 7.9MJ it was replaced by the 120mm RHEINMETTTEL which came in at 9-10MJ but that was in the early 80's Sincerely, Keith
www.strategypage.com /militaryforums/2-12485.aspx   (150 words)

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