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Return To Microscope Article Archive   Search the Article Archives Binoculars - Nothing Escapes These Eyes By Sharon Albright Binoculars are devices that make small objects at a distance appear expanded and clear before your eyes. They are also known as binocular telescopes as they are basically two monocular placed together to allow perfect two-eye viewing. It is surprising to find that those objects, which are completely invisible to human eyes, appear so near and enlarged in the eyes of the binoculars. Factors to consider while purchasing binoculars When you want to choose the binoculars you should try them out and then purchase them. Although the enhanced image through binoculars might appear surprising, yet the working of binoculars is quite simple. You have the lenses at the end of the barrel called objective lens that gathers the light from distant objects and focuses it on the lens nearest to your eyes. With side-by-side two small telescopes fitted, the binoculars impart a great measure of depth of field, than single monocular glasses. When you go to purchase binoculars you will be confused to hear two specific numbers '6 x30' or something similar. Do not get surprised. The first number always refer to the magnification power of the binoculars or how many times the image is magnified. This means that if the number is 6, the image that you view through the lens will be 6 times more magnified than its normal size. However, the second number deals with the size of the objective lens at the end of the binoculars. You should know that the larger the diameter of the objective lens, the more light from the distant objects is attracted and the distant image can be viewed perfectly. However, powerful the binocular is, you must be aware of the way to handle them. Holding the binoculars by the hand will be truly effective as shaking might make the magnification less useful. So if you are planning to use the binoculars for active activities, then get for yourself a pair of binoculars that has 4-7 times magnification. If your work demands using the binoculars in low light situation or indoors, then you should get larger objective lens with 30 power or above. The weight of the binoculars should be considered before you purchase them. When you are using the binoculars for trekking, boating, fishing, or for astronomical purposes, you should see that the weight should not be very heavy. When you are going for these traveling purposes, you should plastic lens in binoculars that will help produce high quality and sharp image. Glass lenses can be available at lower cost but they are very fragile. So you should use plastic lens binoculars for better results. Get a pair of binoculars to enjoy distant objects clearer and nearer to your eyes. About the Author: Sharon Albright is the owner of Binoculars Site. Read more articles on Binoculars and visit her recommended resources. Brightfield Microscopy

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