Does anyone know a good website about concave and convex lenses?
103581
Mail me and i'll give u a whole lot of info.Other wise go to howstuffworks.com
204877
http://39dollarglasses.com\n\nseriously, it sounds too good to be true, but I've gotten glasses from them and they're great. They have many styles and they really are only $39! They have a feature in which you can choose your face shape and you can try them out on a 'virtual person'. :D
210942
() vs )(\n\nhow would something be quasi concave
984480
buy two convex lens, both should have different focal lengths and it is advisable that you should buy lenses of high focal lengths. and a tube is also required.the length of the tube should be equal to the sum of the focal lengths of the two lenses.\nNow, make the bigger lens as the eyepiece and the smaller one as objective. your telescope is ready to wander through the universe.
272929
http://pistons04.tripod.com/\n\nenjoy\nCyn
515775
Try this link. Its on Antropus.com under the tutorials section. :) Its a pretty good site overall. \n\nhttp://www.3dtotal.com/team/tutorials/antro_eye2/antro_eyetex_01.asp
64706
Check out http://www.opted.org/ and get in touch with your local optometrist.  They're usually very willing to help/answer any questions you have about optometry.  See if you can shadow them for a day, too.  Good luck!  :)
45435
commmon one is Convex lens\n(with different angles, to magnify upto diff levels)\nbut for higher levels, it depends upto the magnifying object and distance also
52768
B.  A convex mirror will make light diverge, and no mirror will *alwats* give a inverted image, because it depends whether you're closer than the focal point for a concave lens.\n\nThink about those little round mirrors on buses and huge trucks, and how small the image is.  Those mirrors are convex.
148376
I don't have a specific answer for you, but have you tried asking your local eye doctor or optician?  They have access to just about everything available and may be able to point you in the right direction.
401886
Without regard for cost, your best bet would be Oakly Half Jacket or Rudy Project.  The nice thing about the Half Jacket is that the lenses are interchangeable so you have the flexibility of as many lens types as you want to buy.  I have this frame with 3 lens sets: 1 for bright sun, 1 for partly cloudy days and 1 for overcast days.  Rudy Project is newer to the scene but also makes some great frames and some of their framesets will offer interchangeable lenses.  \n\nI would recommend Oakley due to their greater availability and experience with top quality production
86377
An addition:\n"blind-spot" mirrors in cars are convex-they increase the field of view so vehicles in the blindspot can be seen.\nFlashlights, while not having glass mirrors, have some metal fashioned in a concave manner to direct the light in a beam. The "crazy mirrors" in carnivals are examples of convex or concave mirrors to distort shapes. In a concave mirror, all incident light rays parallel to the principle axis are reflected through the mirror's focus. A formula:\n1/i + 1/O = 1/f, where f is focal length, i is image distance, and o is object distance.
529018
these will help you start:\nhttp://myimager.com\nhttp://mytheme.com\nhttp://blender3d.com\nI use to have more, but I cant think of them right now:(
1152096
The website which i found the best was www.globaleyeglasses.com. They are value for money
823649
http://www.aperfectcircle.com \na Perfect Circle
978638
try this:\n\nhttp://www.ritsumei.ac.jp/~akitaoka/index-e.html\n\nhttp://www.archimedes-lab.org/index_optical.html
773800
http://www.myopia-manual.de/private/manual-2006-january.pdf\n\nhttp://www.allaboutvision.com/conditions/myopia.htm\n\nhttp://www.eyesite.ca/english/public-information/eye-conditions/myopia.htm\n\nhttp://members.aol.com/myopiaprev/charts1.htm