Gain something

Did you know that your blood seems to be green underwater? If somebody cut your hand (or accidentally a shark bite) under 30 feet deep water, your cut bleeds a bright emerald green color. If you bring closer to the surface, it turns brown, then pink, and finally red at the surface. Did human blood really change color like chameleon? The blood doesn't change color. The changes are made by the light. If you are a science student you may know that White is made up of all color like red, orange, yellow, green, blue, indigo, and violet. White paper looks white because light (all  the color) from the sun are reflected back from paper to our eyes, it emits all the colors. Red apple looks red because red light bounces off it, and all the other colors are absorbed. A black object is black because all the colors are absorbed and no light reflects into our eyes. We might know that different colors of light travels at different speeds (that's why red color is used in traffic signals becaus

  The Center of the Universe Tulsa, Oklahoma      The “Center of the Universe” is a little-known mysterious acoustic phenomenon. If you stand in the middle of the circle and make a noise, the sound is echoed back several times louder than it was made. Well, there's nothing much to look, but wait till you hear what it does. Despite the fact that it defines the laws of physics in terms of sound and reflection, there's no one can find the correct explanation of this mechanism. It is made up of nothing but small circle of about 30 inches in diameter made of worn out concrete.(By seeing this image you can absorb that) Then this small turn is again surrounded by one more circle which is made up of 13 bricks. If you measure, it comes 8 feet in diameter altogether.         " When you are inside the concrete circle and make noise, it is echoed back and is return back with much louder than previous one. But people outside the circle can't hear those sounds. "