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  2. Modern technique - Wikipedia

    en.wikipedia.org/wiki/Modern_technique

    The modern technique (abbreviation of modern technique of the pistol) is a method for using a handgun for self-defense, originated by firearms expert Jeff Cooper. [1] The modern technique uses a two-handed grip on the pistol and brings the weapon to eye level so that the sights may be used to aim at the target.

  3. Organocopper chemistry - Wikipedia

    en.wikipedia.org/wiki/Organocopper_chemistry

    Lithium diphenylcuprate etherate dimer from crystal structure Skeletal formula of lithium diphenylcuprate etherate dimer. Organocopper chemistry is the study of the physical properties, reactions, and synthesis of organocopper compounds, which are organometallic compounds containing a carbon to copper chemical bond.

  4. Percussion cap - Wikipedia

    en.wikipedia.org/wiki/Percussion_cap

    Percussion caps have been manufactured in various sizes to fit snugly over different sized nipples. Nipples for 4.5mm and 6mm percussion caps. The percussion cap, percussion primer, or caplock, introduced in the early 1820s, is a type of single-use percussion ignition device for muzzle loader firearm locks enabling them to fire reliably in any weather condition. [1]

  5. Underground hard-rock mining - Wikipedia

    en.wikipedia.org/wiki/Underground_hard-rock_mining

    There are two principal phases of underground mining: development mining and production mining. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and ...

  6. Krytron - Wikipedia

    en.wikipedia.org/wiki/Krytron

    The required trigger pulse voltage is about 200–2000 volts; higher voltages decrease the switching delay to some degree. Commutation time can be somewhat shortened by increasing the trigger pulse rise time. A given krytron tube will give very consistent performance to identical trigger pulses (low jitter). [5]

  7. Reactions of organocopper reagents - Wikipedia

    en.wikipedia.org/wiki/Reactions_of_organocopper...

    Reactions of organocopper reagents involve species containing copper-carbon bonds acting as nucleophiles in the presence of organic electrophiles.Organocopper reagents are now commonly used in organic synthesis as mild, selective nucleophiles for substitution and conjugate addition reactions.

  8. Dying To Be Free - The Huffington Post

    projects.huffingtonpost.com/dying-to-be-free...

    Confidence often dims soon after graduation, when they once again face real life with a still-warped brain hypersensitive to triggers that will push them to use again. Cues such as a certain smell associated with the drug or hearing the war stories of other addicts could prompt a relapse.

  9. John Miller Cooper - Wikipedia

    en.wikipedia.org/wiki/John_Miller_Cooper

    John Miller Cooper (1912 – September 18, 2010) was an American educator. He is also regarded as one of the early innovators of the basketball jump shot and as a pioneer in the field of biomechanics and human movement.