Black widow spider bite facts nr 3 Even a large, female black widow spider can only inject a very small amount of venom in one bite. Unlike the small insects that the black widow spiders feed on, a human will therefore usually dont die after a black widow bite. Our large bodies can diffuse the venom and gradually break it down.
Fuel dispenser. A fuel dispenser is a machine at a filling station that is used to pump gasoline, petrol, diesel, CNG, CGH2, HCNG, LPG, LH2, ethanol fuel, biofuels like biodiesel, kerosene, or other types of fuel into vehicles. Fuel dispensers are also known as bowsers (in Australia), petrol pumps (in Commonwealth countries), or gas pumps (in North America).
Invented by : Otto Von Guericke. Invented in year : 1650. Air Pump is a device that removes gas molecules from a sealed volume or a chamber in order to leave behind a partial vacuum. By removing gas from a chamber, a vacuum pump reduces the pressure inside the chamber.