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  2. Abraham Accords - Wikipedia

    en.wikipedia.org/wiki/Abraham_Accords

    The plan provided for a unified Jerusalem as Israel's capital and Israeli sovereignty over the Jordan Valley and the principal Jewish settlements in the West Bank, amounting to annexation of roughly 30% of the territory. The Palestinians would get some desert areas near the Egyptian border, limited sovereignty, and a non-contiguous state with ...

  3. Blockchain - Wikipedia

    en.wikipedia.org/wiki/Blockchain

    [3] [30]: ch. 08 [31] For example, bitcoin uses a proof-of-work system, where the chain with the most cumulative proof-of-work is considered the valid one by the network. There are a number of methods that can be used to demonstrate a sufficient level of computation .

  4. Radiation - Wikipedia

    en.wikipedia.org/wiki/Radiation

    In all cases, microwaves include the entire super high frequency band (3 to 30 GHz, or 10 to 1 cm) at minimum, with RF engineering often putting the lower boundary at 1 GHz (30 cm), and the upper around 100 GHz (3 mm).

  5. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    In 1629, Isaac Beeckman proposed an experiment in which a person observes the flash of a cannon reflecting off a mirror about one mile (1.6 km) away. In 1638, Galileo Galilei proposed an experiment, with an apparent claim to having performed it some years earlier, to measure the speed of light by observing the delay between uncovering a lantern ...

  6. Gamma ray - Wikipedia

    en.wikipedia.org/wiki/Gamma_ray

    One of the most common gamma ray emitting isotopes used in diagnostic nuclear medicine, technetium-99m, produces gamma radiation of the same energy (140 keV) as that produced by diagnostic X-ray machines, but of significantly lower energy than therapeutic photons from linear particle accelerators. In the medical community today, the convention ...

  7. LGM-30 Minuteman - Wikipedia

    en.wikipedia.org/wiki/LGM-30_Minuteman

    On 21 August 2017, the US Air Force awarded 3-year development contracts to Boeing and Northrop Grumman, for $349 million and $329 million, respectively. [73] One of these companies will be selected to produce this ground-based nuclear ICBM in 2020. In 2027, the GBSD program is expected to enter service and remain active until 2075. [74]

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