The Science of RAINBOWS

-

       
      The speed of light, which is equal to 3 x 108 meters per second in air or space,but when light passes through other materials like water or glass (known as mediums), the speed can change and slow down. Light we experience from the Sun is something known as white light. White light is composed of all different colors (red, orange, yellow, green, blue, indigo, violet) that the human eye can see. This kind of light is known as visible lights. These visible colors all have unique characteristics known as wavelengths. Going from red through violet the wavelength goes from greatest to smallest. It’s this wavelength that will determine how the different colors react when they go through a medium (for example a raindrop).  
     A rainbow is created when white light is bent (refracted) while entering a droplet of water, split into separate colours, and reflected back. A rainbow is actually round like a circle. On the ground, the bottom part is hidden, but in the sky, like from a flying airplane, it can be seen as a circle around the point opposite the Sun.You definitely can’t see it during the rainstorm because clouds block most of the light. You also can’t see it long after a rainstorm, because then all of the water vapor in the air has evaporated. The best time to see a rainbow is just after a rainstorm has ended.Notice that the colors will be inverted from the original rainbow; that’s because these light rays have undergone a second reflection inside the droplet!

Comments

Post a Comment

Popular posts from this blog

Oxygen can Killing us slowly!!!

-
Image
 Hey my friend , be relax ,close your eyes for a moment and FOCUS ON your BREATHING. Breathe deeply. Then release the air from your lung .Do it many times .Of course It feels great .so oxygen brings life .97 % of the oxygen do this miracle for us  and used to produce energy. .BUT remaining 3 % of the ( hungry) Oxygen having Dark side and produce free radicals.           These free radicals can eat our body cells day by day....showing symptoms when we get old. LIVING TOO SHORT;DYING TOO LONG Scientific research shows that these free radical damage is the underlying causes of almost every chronic degenerative diseases known as diabetes ,cancer, macular degeneration and arthritis. If it is in your eyes ,you could develop cataracts or if it is in your blood vessels, you could have a heart attack or If it is in your joints ,it could develop arthritis.             Causes of free radical damage is           NOT TAKING ENOUGH ANTIOXIDANTs          excessive stress ,fast foods ,smoking cigeret
Read more

Insulin Injection

-
Insulin Injection Sites: Where and How to Inject Overview   Insulin is a hormone that helps cells use glucose (sugar) for energy. It works as a “key,” allowing the sugar to go from the blood and into the cell. In type 1 diapetes, the body doesn’t make insulin. In type 2 diabetes, the body doesn’t use insulin correctly, which can lead to the pancreas not being able to produce enough — or any, depending on the progression of the disease —insulin to meet your body’s needs. Insulin injection methods There are different ways to take insulin, including syringes,  insulin pens ,  insulin pumps , and  jet injectors . How to inject insulin
Read more

Why heavier objects do NOT fall faster than lighter objects?

-
Image
    How fast something falls due to gravity is determined by a number known as the "acceleration of gravity", which is 9.81 m/s^2 at the surface of our Earth. Basically this means that in one second, any object's downward velocity will increase by 9.81 m/s because of gravity. This is just the way gravity works - it accelerates everything at exactly the same rate. What you may be getting confused by is the fact that the force of gravity is stronger on heavier objects than lighter ones. Another way of thinking of this is to say that gravity has to pull harder on a heavy object than a light one in order to speed them both up by the same amount. However, in the real world, we have things like air resistance, which is why sometimes heavy things do fall faster. For example, if you drop a feather and you drop a rock, the rock will land first since the feather is slowed down more by the air. If you did the same thing somewhere where there is no air, the feather and the roc
Read more