This is the most common question about binoculars and it is a good one. You will see combinations of numbers like 7x35, 8x42, 10x50 or 7-15x35 and many more. The numbers to the left of the "x" always refer to how much magnification the binocular has. The number to the right of the "x" indicate how big the lens is at the bottom of the binocular (this is called the objective lens). So, 7x35 means this binocular magnifies objects so they appear 7 times closer.

When buying a pair of binoculars, these descriptive numbers indicate first, the magnification of the binoculars, second the diameter in millimeters of the objective lens. The magnification of binoculars means that with a magnification factor of 10, objects will appear 10 times closer. The larger the objective lens, the more light the binoculars collect, making twilight or astronomical viewing possible. Both of these factors are relevant to the manner in which you use your binoculars. See similar questions...

One of the most important pieces of equipment that you can take on a hunting trip is a good pair of quality binoculars. The guides prefer Zeiss or Leica. If your binoculars are 10 power that is generally sufficient and a spotting scope is not a necessity. Each of the guides will have a spotting scope. If you prefer to have your own by all means bring one. See similar questions...

A spotting scope is a small telescope designed for daytime observing of birds, wildlife, boats, airplanes and any application where high magnification is needed. Optically speaking, most spotting telescopes are refractors, but several excellent spotting scopes are Maksutovs. Absolutely. Many astronomical objects - the rings of Saturn, Jupiter, star clusters, nebulae - are within the magnification range of a 20-60x zoom spotting scope. See similar questions...

Of course! Many of our customers use their Garrett Optical binoculars for terrestrial observation in addition to amateur astronomy, and some use their instruments exclusively for hunting or other spotting applications. We generally recommend that customers wishing to use their binoculars for terrestrial work adhere to the same mounting recommendations made for amateur astronomers, and we recommend 20-25x or less magnification for most terrestrial applications. See similar questions...

Typically, the next few weeks or months are occupied with sound editing of all types. The Director will be checking on the various aspects of the sound job as time progresses, to be sure that his vision is being realized. Usually, there is provision for one or more "effects reviews" where the effects are listen to and approved. The same goes for Foley, Dialogue, ADR, Sound Design and Music. See similar questions...

The numbers in parenthesise indicate how many new topics (or posts) have been made since your last visit to the forums. Registered (anya, Camille, hudson702, Manuella, mindfreak, pharos, 1 invisible), 121 Guests and 51 Spiders online. See similar questions...

If you’re a "birder", binoculars are essential. The best range of magnification for safari is from 6X to 8X with a lens size of 35mm. See similar questions...

That 10-10-10 on the bag or bottle is best explained by remembering "up, down, all-around". The first number is the percentage of nitrogen by weight. Nitrogen promotes growth and green-up. The second number is the percentage of phosphorus by weight and is helpful for good root growth. The third number is the percentage of potassium by weight which promotes all-around plant health such as hardiness and disease resistance. Gordon's currently has 3 liquid fertilizers and a granular weed and feed. See similar questions...

Most occupations include a range of work that can be undertaken. For example, plumbing can include sanitary plumbing, roof plumbing, drainage work etc. A licence may include some or all of the scopes of work in an occupation. To identify how one licence is equivalent to another, scopes of work can be used to describe the conditions and restrictions that may be applied to a licence. Scopes of work have been given shortened codes. See similar questions...

We'd love to be able to stock these, but we don't have a reliable source for the very high quality scopes such as Lymans and Unertls. When you can find them, the price is often sky high. The best source we have found is Parsons Scope Service (513)867-0820. Montana Vintage Arms (www.montanavintagearms.com) is also making scopes and mounts which are suitable for BPCR competition. See similar questions...

How to choose the right Telescope? A telescope makes a wonderful gift for someone who has an interest in the night sky. Even the smallest telescope is capable of revealing the rings of Saturn, the cloud belts of Jupiter, hundreds of star clusters and even distant galaxies. With a medium telescope or large telescope, amateur astronomers rarely see everything there is to see with their telescope, even after years of observing. Astronomy is truly an interest that can last a lifetime. See similar questions...

Many women experience spotting during their pregnancies yet they have a completely normal pregnancy. The trimester you are in and your associated symptoms will help us to determine what the spotting means. You should always call us to make an appointment if you are suddenly spotting. Since we have our own ultrasound equipment, during your exam we can look at your baby and placenta to determine the cause of the bleeding. See similar questions...

Remember that there was no common year 0. The year preceding the common year 1 is the year -1 on my dropdown list. So this would correspond exactly to what is meant by 1 BCE (before the common era). Similarly -100 would be 100 BCE, etc. See similar questions...

Numbers will be automatically added to the end of an auto-received file if there is a name conflict in the auto-receive directory. The numbers indicate the time that the file was received. For example, say that you have a file called "MyFile.txt" in your auto-receive directory, and someone sends you a file named "MyFile.txt." The second "MyFile.txt" will have the time placed at the end, such as "MyFile.txt103215" indicating that the file was started at about 10:30 am. See similar questions...

The federal government requires all air conditioning and heating equipment to be rated for efficiency. The higher the rating, the more efficient the model. Gas furnaces are rated for (Annual Fuel Utilization Efficiency). This defines the amount of heat used to warm your home from the burned fuel. A 90% furnace will use 90% of the available heat to heat your home. 10% of the heat is vented outdoors. Many older gas furnaces are only 60% efficient. The other 40% is vented outdoors. See similar questions...