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  2. Attempted assassination of Donald Trump - Wikipedia

    en.wikipedia.org/wiki/Attempted_assassination_of...

    Trump credited a large chart displaying immigration statistics with saving his life. Immediately before the first shot, he turned his head to his right, toward the chart, and pointed to it. The movement narrowed the profile of Trump's skull toward the direction of the shooter, possibly saving him from a direct gunshot wound to his skull.

  3. History of the battery - Wikipedia

    en.wikipedia.org/wiki/History_of_the_battery

    However, customers found his first model of the alkaline nickel–iron battery to be prone to leakage leading to short battery life, and it did not outperform the lead-acid cell by much either. Although Edison was able to produce a more reliable and powerful model seven years later, by this time the inexpensive and reliable Model T Ford had ...

  4. List of battery types - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_types

    A Duracell AA size alkaline cell, one of the many types of battery This list is a summary of notable electric battery types composed of one or more electrochemical cells . Three lists are provided in the table.

  5. Lockheed Martin F-35 Lightning II - Wikipedia

    en.wikipedia.org/wiki/Lockheed_Martin_F-35...

    The F-35 was the product of the Joint Strike Fighter (JSF) program, which was the merger of various combat aircraft programs from the 1980s and 1990s. One progenitor program was the Defense Advanced Research Projects Agency (DARPA) Advanced Short Take-Off/Vertical Landing (ASTOVL) which ran from 1983 to 1994; ASTOVL aimed to develop a Harrier jump jet replacement for the U.S. Marine Corps ...

  6. Bluetooth - Wikipedia

    en.wikipedia.org/wiki/Bluetooth

    A Bluetooth earbud, an earphone and microphone that communicates with a cellphone using the Bluetooth protocol. Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs).

  7. Carbon-14 - Wikipedia

    en.wikipedia.org/wiki/Carbon-14

    Carbon-14, C-14, 14 C or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples.

  8. Isobutane - Wikipedia

    en.wikipedia.org/wiki/Isobutane

    Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH 3) 3. It is an isomer of butane. Isobutane is a colorless, odorless gas. It is the simplest alkane with a tertiary carbon atom.

  9. Carbon - Wikipedia

    en.wikipedia.org/wiki/Carbon

    Carbon is the sixth element, with a ground-state electron configuration of 1s 2 2s 2 2p 2, of which the four outer electrons are valence electrons. Its first four ionisation energies, 1086.5, 2352.6, 4620.5 and 6222.7 kJ/mol, are much higher than those of the heavier group-14 elements.