FD: v3 (First Timers)

MIGHTY FEATHERS 1: The rachis of the feather-–the shaft– and the barbs growing from the rachis shaft–are all made of the same protein keratin.

MIGHTY FEATHERS 1: Feathers are 50% keratin. Keratin is also what makes up lion claws, horse hooves, rhino horns, your skin–and your fingernails too! Feathers also have fatty acids in them.

MIGHTY FEATHERS 1: As the feather is forming, blood flows up the rachis tube, At this stage, it’s called a blood feather and looks a bit like a thermometer because of the blood-filled tube.

MIGHTY FEATHERS 1: Egrets and herons produce continuously growing powder down feathers.The down feather’s tips break off and create a cleaning powder like talcum powder.

MIGHTY FEATHERS 1:   The peacock’s astonishing eye feather shockingly has green color only. It has tiny mirrors on the tiny barbules.  These mirrors are too small to see.

MIGHTY FEATHERS 2: Peacock eye feathers have 1 million DNA-designed mirrors. These create one of the prettiest feathers on the planet– using only mirrors

MIGHTY FEATHERS 2: Critical primary flight feathers on the ends of bird wings are all built with the correct strength that each bird needs.
Look around you and see all the variety!
There are the super-strong feathers of the 80 beats per second wings of some hummingbirds and the wildly strong primary feathers of the 240 mph peregrine falcons –and feather strengths for everything in-between!

MIGHTY FEATHERS 2: Some manakin bird species make machine-gun like sounds called sonations with their wings. When they are whipped by the small birds, the feather ends move at over 767 mph to make miniature sonic booms! This is faster than the speed of sound!

MIGHTY FEATHERS 2: Some feathers are crazy long like the super-long Reeves Pheasant tail feathers. Beautiful six-foot feathers grow out of tiny pin feathers which are a few inches long. Other feathers like those on the face of owls are so tiny that they look like hairs with every one grown at exactly the right length and direction.

THE CARB’S VENTURI: You get liquid gas at a gas station . It is exploded inside the cylinders of your car engine by a spark from the spark plug. The power pushes the pistons.

THE CARB’S VENTURI: The oil in the engine of the car must be turned into a vapor before it is injected into the cylinders.

THE CARB’S VENTURI: The venturi inside the carburetor speed up the flow of the air rushing into the carburetor.

THE CARB’S VENTURI: There’s an experiment that we do in science classes where we use a 5-gallon water bottle. It makes a loud whoosh sound.

THE CARB’S VENTURI: Toward the top of the carburetor, it gets narrower. This is called the ventricles.

THE CARB’S VENTURI: Above the venturi of the carburetor is a butterfly valve (the choke valve).