Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun One million ( 106 ) joules. Symbol: MJ.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

mega- + joule

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Examples

  • A megajoule is a measure of energy equivalent to that consumed by 10,000 100-watt light bulbs in one second.

    InformationWeek - All Stories And Blogs 2009

  • Earlier this month, NIF became the first fusion laser in the world to break the megajoule barrier (a megajoule is the energy consumed by 10,000 100-watt light bulbs in one second) by delivering 1.1 million joules of ultraviolet energy to the center of its target chamber - more than 25 times more energy than the previous record-holder.

    U.S. Department of Energy - Press Releases 2009

  • "A megajoule is the rough equivalent of a stick of dynamite.

    The Cardinal of the Kremlin Clancy, Tom, 1947- 1988

  • Okay, a megajoule is a million of them" seven hundred thousand foot-pounds.

    The Cardinal of the Kremlin Clancy, Tom, 1947- 1988

  • Earlier this month, NIF became the first fusion laser in the world to break the megajoule barrier (a megajoule is the energy consumed by 10,000 100-watt light bulbs in one second) by delivering 1.1 million joules of ultraviolet energy to the center of its target chamber "more than 25 times more energy than the previous record-holder.

    The Student Operated Press 2009

  • The oil sands figure was one of the highest—107 grams of carbon dioxide per megajoule of energy, compared to 85.8gCO2/MJ for conventional gasoline.

    Canada, EU Spar Over Climate Rule Guy Chazan 2011

  • Oil sands would have a value of 107 grams of carbon dioxide per megajoule of energy, compared with 87.5 grams for conventional crude.

    EU Move to Deepen Oil-Sands Row Alessandro Torello 2011

  • The team found the production of agave-ethanol led to the net emission of 35g of carbon dioxide for each megajoule of energy, far lower than the 85g/MJ estimated for corn ethanol.

    Tequila gives new biofuel crops a shot 2011

  • The good news is that in March of this year, when Moses and his team fired up the giant laser, they were able to produce more energy than anyone ever had before — just over a megajoule, which, Moses says, "was like breaking the four-minute mile."

    Could This Lump Power the Planet? 2009

  • J decajoule daJ decijoule dJ hectojoule hJ centijoule cJ kilojoule kJ millijoule mJ megajoule

    Joule 2009

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