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2. Pit (nuclear weapon) - Wikipedia

   en.wikipedia.org/wiki/Pit_(nuclear_weapon)

   The pits of the first nuclear weapons were solid, with an urchin neutron initiator in their center. The Gadget and Fat Man used pits made of 6.2 kg of solid hot pressed plutonium-gallium alloy (at 400 °C and 200 MPa in steel dies – 750 °F and 29,000 psi) half-spheres of 9.2 cm (3.6 in) diameter, with a 2.5 cm (1 in) internal cavity for the initiator.

3. The coziest fall decor to shop right now, according to a home ...

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   It has the same modern, smokeless design as a regular Solo Stove (which happens to be our best-reviewed fire pit for 2024), but it's just 7 inches tall. Use it for a little extra light and heat ...

4. Modulated neutron initiator - Wikipedia

   en.wikipedia.org/wiki/Modulated_neutron_initiator

   The inner surface of that shell had 15 concentric, wedge-shaped latitudinal grooves and was, like the inner sphere, coated with gold and nickel. [ 2 ] [ 3 ] A small amount of polonium-210 (50 curies, 11 mg) was deposited in the grooves of the shell and on the central sphere: the layers of gold and nickel served to shield the beryllium from ...

5. These are the best Cyber Monday deals under $100: Walmart ...

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   Auseo Tabletop Fire Pit for $27 ($93 off) Amazon Smart Plug for $13 ($12 off) ... These luxurious bed sheets are half off at Walmart during Cyber Monday in every size and nearly every color. At ...

6. Fire pit - Wikipedia

   en.wikipedia.org/wiki/Fire_pit

   A fire pit. A fire pit or a fire hole can vary from a pit dug in the ground to an elaborate gas burning structure of stone, brick, and metal. The defining feature of fire pits is that they are designed to contain fire and prevent it from spreading. Certain contemporary fire pit styles include a fire bowl that can either be set in the ground or ...

7. Nuclear weapon design - Wikipedia

   en.wikipedia.org/wiki/Nuclear_weapon_design

   A hollow plutonium pit was the original plan for the 1945 Fat Man bomb, but there was not enough time to develop and test the implosion system for it. A simpler solid-pit design was considered more reliable, given the time constraints, but it required a heavy U-238 tamper, a thick aluminium pusher, and three tons of high explosives. [citation ...