Ultra

(noun)

The designation adopted by British military intelligence in June 1941 for wartime signals intelligence obtained by breaking high-level encrypted enemy radio and teleprinter communications at the Government Code and Cypher School at Bletchley Park.

Related Terms

Examples of Ultra in the following topics:

  • Electron Microscopy

    • To use this instrument, ultra-thin slices of microorganisms or viruses are placed on a wire grid and then stained with gold or palladium before viewing, to create contrast.

  • Specialty Microscopes and Contrast

    • A beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it passes through.

  • Arthroplasty

    • The plastic (actually ultra high-molecular-weight polyethylene) can also be altered in ways that may improve durability.

  • Microwaves

    • The boundaries between far infrared light, terahertz radiation, microwaves, and ultra-high-frequency radio waves are fairly arbitrary.
    • Ultra-high frequency (UHF) designates the microwave frequency range of electromagnetic waves between 300 MHz and 3 GHz , also known as the decimeter band because the wavelengths range from one to ten decimeters, or 10 centimeters to 1 meter.

  • American Art Deco Architecture

    • An array of designers quickly ultra-modernized and streamlined the designs of everyday objects, such as toasters.

  • Productivity Gains from Hardware

    • In the 1990s, one could buy an IBM desktop computer with a 486 processor, 4 megabytes of RAM, 250 megabytes HDD, and a 3.5" floppy disk for more than you would pay today for a top-of-the-range ultra lightweight laptop with an Intel Core i7 processor, 8GB of RAM, 1TB HDD, and a Blu-Ray player.
    • Even in the developing world, ultra low-cost laptops have been designed to allow children in poor communities to learn about and use modern technologies.

  • Green Architecture: The Future of Architecture

    • Some other examples of sustainable building materials include: recycled denim or blown-in fiber glass insulation; sustainably harvested wood; sheep wool; concrete (high and ultra high performance or self-healing concrete); panels made from paper flakes; baked earth; clay; vermiculite; cork; expanded clay grains' coconut fibers; calcium sand stone; and locally obtained stone and rock.

  • The Carbon Cycle

    • An ultra-high-resolution NASA computer model has given scientists a stunning new look at how carbon dioxide in the atmosphere travels around the globe.

  • How about relativistic particles?

    • If the particles are ultra-relativistic it is appropriate to neglect the parallel contribution completely.

  • Problems

    • Calculate the total energy radiated per unit time, expressing it in terms of the constants already defined and the ratio $\gamma=1/\sqrt{1-\beta^2}$ of the particle's total energy to its rest energy.You can assume that the particle is ultra-relativistic.