new sun glass

The total population of New York State is 19 million, 39% of which wear glasses. Estimate the total number of people who do not wear glasses. => 22.09 million or 111.59 million or 11.59 million or 32.39 million..

Polaroids are used in sun glasses. They reduce the intensity and the glare by cutting down the horizontally polarized light. Polarized light is used in photo elastic stress analysis. For 3-D view, special type of glasses, which have polaroids with perpendicular..

When a powerful beam of light is passed through a colloidal solution placed in a dark room, the path of the beam gets illuminated and appears as a glow in the colloidal solution. This is because of scattering of light by the colloidal particles...

A solar cooker contains a box made of insulating material, with its inner surfaces blackened. The top is closed by a glass sheet. The box is closed such that the inner part does not come in contact with the outside air, there by reducing heat loss due to convection currents. The glas..

The stratosphere of the atmosphere has ozone (O 3 ). Ozone is known to absorb the Ultraviolet (UV) rays present in the sun's radiation. The UV rays are believed to cause skin cancer and mutations. Thus, the ozone protects us from the harmful effects of the UV rays. However, hydrocarbons s..

Introduction - For thousands of years people have looked up at the stars and wondered what lay beyond them. It was once believed that the earth was the center of the universe and that everything moved around it. It was later discovered that the earth moves around the sun. Today, powerful ..

Question: Global Warming - Climate An Introduction According to the National Academy of Sciences, the earth's surface temperature has risen by about 1 degree Fahrenheit in the past century, with accelerated warming during the past two decades. There is new and stronger evidence ..

transmitted by T 1 and T 2 remain unaffected. However, when axes of the two crystals are at 90 0 to each other, light is completely cut off. This establishes that light waves are transverse in character. When unpolarised light is seen through a single crystal (polaroid), intensity of transmitted li..

Measurement of Time - Thus just as length has units like kilometer, meter, centimeter, millimeter etc., time also has units like year, month, day, hour etc. You must have been hearing quite a lot about the ending of the millennium and starting of the third millennium in the year 2001. Here we have ..

Before green house effect is studied one needs to know what kind of radiation / sunshine we receive on earth. 'Sunshine' is a common man's term indicating all that we receive from sun. In a shallow perspective of common man, it may simply, mean light. But in a deep scientific meaning of '..