Laser ,Types and Use

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  LASER :-                    LASER is an acronym of  Light Amplification by stimulated emission of Radiation. It is an optical device which produces an intensive beam of highly coherent, Monochromatic light[ Electromagnetic radiation, especially visible radiation, of only one frequency or wavelength]. It can travel over great distance without spread.   LASER LIGHT :-                                   1. It is very different than normal light and contains only one specific wavelength of light.                                 2. A laser light has very tight beam and is very strong and concentrated.                                 3. A laser light can go to the moon and th...
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Percentage of Alcohol in every Alcohol Beverage

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What is an Alcoholic Beverage?
                                  - Yeast contains Rymase enzymes which convert glucose into ethyl alcohol. So, the beverage contains ethyl alcohol is called an alcoholic beverage.

 1. Distilled Beverage- These beverages are prepared by distillation. Amount of alcohol in them may vary from 40-55%.

Distilled Beverage                  % Alcohol                          Sources
Brandy                                      (40-50) %                           Grapes

 Gin                                           (35-40)%                             Maize
      
Rum                                         (45-55) %                          Sugarcane 
   
Vodka                                       (30-40)%                       Corn, Wheat

 Whisky                                    (40-50)%                           Molasses
Spirit-  It is an Alcoholic beverage containing ethanol. It is produced by the means of fermentation of grain, vegetables and fruits.

 Wine- Wine is an alcoholic beverage made from fermented grapes, apples, berries, etc. It contains 9-16% ethanol by volume. 

 2. Undistilled Beverages- These are prepared by the addition of the substance for flavour, perfume and colour.  in them, the amount of alcohol varies from 3-15%. 

 Undistilled Beverage                % Alcohol                          Sources
Beer                                            (4-6)%                                 Barley

 Cider                                           (2-6)%                                 Apples

 Champagne                                (10-15)%                             Grapes

 Port and Sherry                          (15-20)%                             Grapes

 Oenology- It is the branch of chemistry which deals with the study of all aspects of wine and wine making.

Denatured alcohol- Some substances like pyridine, acetone, methyl alcohol are added to ethyl alcohol(ethanol) to make it poisonous and unfit for drinking. This alcohol is termed as denatured alcohol.

 Absolute alcohol- It is also called grain alcohol. It is pure ethyl alcohol which is a volatile and colourless liquid.

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