binoculars,what does 10x50 mean or 20x70 mean?
925522
10x50 is 10x magnification and a 50mm objective lens\n20x70 is 20x magnification and a 70mm objective lens\n A larger objective lens will allow more light in for clearer viewing, especially in low light conditions, and allow a larger field of view at any given distance.
808919
johnpaul_ is revealing his own lack of education in his answer.\n\nYes, it is possible for glasses to give you better than 20/20 vision. The 20/20 number is a comparison between two people... the first number represents you, and how close you have to be to see a given object clearly. The second number represents a person with "normal" sight and how far away they have to be to see that object clearly. For example, if person who has 20/200 vision (legal blindness) has to stand 20 feet away from an object in order to see it clearly, a person with normal vision can stand 200 feet away and see the image as clearly.\n\nSo there is nothing special about 20/20 vision. It is just an aribitrary standard based on the average range of vision (which was established many years ago, an may not be reflective of the current US population). So, good glasses will not necessarily "correct" you to 20/20 vision. They may be "over prescribed" and land you at 25/20, or under-prescribed and land you at 20/25. There is nothing wrong with the eye chart. If you are too over- or under-prescribed, you may experience a lot of eye strain. If that happens you need to get a new pair or you may get a lot of headaches.
929942
b. 200.\n10 x 20 =200.\nThis is how you get the total magnification by multiplying the individual components.
51664
1.35 x 10th\n\nI probably typed it wrong.  1.35 times 10 to the 10th power.
1111648
200 x 200\n\nor\n\n40, 000 colors
568604
900. these are al squared numbers. 100=10x10; 3600=60x60; 400=20x20; 900=30x30
622348
Sorry I can't help ya dude, BUT I'm a big time fan of Orion's products.  I own a 10 x 50 OUTSIDER from Orion, and the optics are out of this world.  Extreme clarity, even around the edges.  I haven't found another binocular that can top it!  I've always wondered about those simply gorgeous views of wide stellar swaths!  I'm not endorsing here, just stating a fact Orion has quality equipment.
576194
Absolutely Yes. No self respecting amateur astronomer would be without his binoculars. I have 10x50, which is a little higher magnification than the "standard" 7X50 recommended for astronomy, but some amateurs go for giant ones, like 15x100 and larger. Binoculars are very good for viewing comets, larger galaxies, nebulae and star clusters, especially from a really dark area. Many such objects are quite large, but dim. For example, the famous Andromeda galaxy actually appears several times BIGGER than the Moon does, although it isn't nearly as bright. And binoculars are easily taken along in the car to those remote places where you have to go to see really dark skies.
805759
Something less than 10 microns x 10 microns x 10 microns.\n\nor a list of "My Successes" by George W Bush.
768844
40x means 40 times the magnification\nthe "x" stands for the variable being multiplied by 40.\nit can also mean to multiply in math.
964811
No.  The binocular is fine, but for most people 8X is about the highest power to hold by hand.  If you are steady you could try up to 10X but even then you would have to hold it agains something steady.  With 11X it would be very hard to hold them steady enough to really see something.
796477
Not sure, but all of the paper sizes tie into each other. It has to do with filing.  Fold a 11x17 in half, you get a 8.5x11...fold a 22x34 in half you've got 11x17, fold again 8.5x17.......you get the picture. Not sure where it all started though!
970064
if you want the field of view to be larger use the LPO (Low power objective) and if you want the specimen appears bigger use the HPO  (High Power Objective)
648027
5 millimetres.  If something is on a scale of 20:1 it means the original version is 20 times the size.  So it's like saying what's one twentieth of 10cm.
125377
509.7 OR 5.097 X 10 TO THE THIRD POWER
71489
is this a question about being a pilot? if not the only thing that matters is that your vison can be correceted to 20-20 or close to it with glasses.\n\nmsg me if you have more questions
810960
Easy. 40 divided by 2 is 20. Take half of 40.  OR 40x0.5