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How prairie dogs use the Bernoulli’s principle.
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How prairie dogs use the Bernoulli’s principle.
In order to ensure sufficient oxygen within their burrow, one of the entrances is built with a raised mound of dirt, while the other is not. This determines different wind velocities and different pressures + natural ventilation
有趣
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twitter.com)
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Massimo
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This is Desmond Doss, a non-combatant medic who served in World War 2. At the Battle of Okinawa in 1945, he single-handedly saved 75 lives, one at a time while under gunfire. He is the only conscientious objector to receive the Medal of Honor for his actions.
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This is Desmond Doss, a non-combatant medic who served in World War 2. At the Battle of Okinawa in 1945, he single-handedly saved 75 lives, one at a time while under gunfire. He is the only conscientious objector to receive the Medal of Honor for his actions.
Below is his Medal…
时政
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twitter.com)
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Wars
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Dnipro. Friday evening. A high-rise building and the Security Service of Ukraine's building were hit. Russian missile terror again.
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Dnipro. Friday evening. A high-rise building and the Security Service of Ukraine's building were hit. Russian missile terror again.
Promptly held conversations with the Security Service of Ukraine, the Ministry of Internal Affairs, the State Emergency Service, and the military…
时政
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twitter.com)
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