NOW YOU KNOW

HOW DO PLANES FLY
A plane’s engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane’s weight and holds it in the sky. … The wings force the air downward and that pushes the plane upward.

Hii tulisoma na @KUNGU THE PILOT sept 1962

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i know now

: Vaccines contain a small amount of the germs or parts of the germs that cause disease. … When you receive a
vaccine , your body thinks the small amount of the disease germ is the disease itself, and your immune system starts creating antibodies (proteins that destroy disease germs). so a polio vaccine will be a mild dosage of polio injected into your body. now you know

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Sijui story za vaccine, mi najua ni Mungu amenlinda

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The small amount of germs in this case polio viruses has DNA removed from it making it act just like a shell or act like a gun with no bullets.

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Haiya madaktari wako wote huku.mgomo haijaisha

Bernoulli’s effect. Same principle behind a carburetor.