Is Rainbow Really A Bow???


Everyone will agree that rainbow is one of nature’s most splendid masterpieces. A simple phenomenon of bending of light as it passes through water droplets can create such amazing spectrum of colors: Rainbow! Light is refracted as it enters the raindrop, then reflected inside the drop and again refracted as it goes out of the drop.How can we view rainbow ?? To have a view, your back must be to the sun as you look at an approximately 40 degree angle above the ground into a region of the atmosphere with suspended droplets of water or even a light mist. Each individual droplet of water acts as a tiny prism that both disperses the light and reflects it back to your eye. As you sight into the sky, wavelengths of light associated with a specific color arrive at your eye from the collection of droplets. Continue reading “Is Rainbow Really A Bow???”

How Zero G Planes Fly???


If you ever wished for weightlessness like astronauts, here is an easy way to feel it… Get into a Zero Gravity Plane. Zero Gravity Planes performs parabolic arcs to create a weightless environment allowing you to float, flip and soar as if you were in space. Parabolic flight or zero gravity flight is an aerobatic maneuver performed by an airplane that enables brief (15-25 sec) periods of near-zero-gravity. Astronauts feel weightless because their space shuttle is in a state of continuous free fall to the earth. If an astronaut on the space station drops a pen, it doesn’t look like it’s falling. That’s because they’re all falling together: the pen, the astronaut and the station. But they’re not falling towards Earth, they’re falling around it. Because they’re all falling at the same rate, objects inside of the station appear to float in a state we call “zero gravity” (0g), or more accurately microgravity (1×10-6g). Objects in a state of free fall are said to be weightless. The object’s mass is the same, but it would mark “0” on a scale. Eventhough your mass stays the same, weight varies depending on whether you are on Earth, the moon or in orbit. Gravitational force is a measurement of the acceleration due to gravity that causes weight. Zero gravity is a condition of weightlessness referring to the absence of a gravitational force (g-force or Gs). Continue reading “How Zero G Planes Fly???”