Concave lenses

First posting: Tue, May 08, 01 09:01:03 PM

someone

Is the focal length of a concave lens equal to a convex length?

RESPONSES
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Colin Kaminski - Fri, May 11, 01 12:03:32 AM
I am not sure I understand your question. If you draw a cone starting at a negative focal length (behind a concave lense) you can compare it with the cone after a positive focal point. Does this make any sense? If your goal is to spread a laser beam both lenses are useful. 64.170.192.83

Randy - Tue, Nov 06, 01 07:09:23 PM
I do not under this statemrnt above 216.198.114.96

Lauren - Mon, Jan 07, 02 07:38:10 PM
is nearsightedness corrected with a convex or concave lens 63.36.235.208

Marvin - Sun, Jan 20, 02 04:51:52 PM
I won't to know two uses of a concave lense 213.122.232.104

fred - Sun, Jan 20, 02 04:52:50 PM
yes 213.122.232.104

Jack - Fri, Jan 25, 02 02:27:24 PM
Are there any easy ways to find the focal length of a concave lense? For a convex mirror I used a light source and a sheet of paper but I am lost for concave mirrors. 65.166.70.3

dick - Tue, Oct 01, 02 01:10:44 PM
u guys suck 207.20.28.61

dick - Tue, Oct 01, 02 01:11:14 PM
u guys suck me 207.20.28.61

nip - Thu, Oct 10, 02 04:35:45 AM
i agree with u dick they suck 139.134.58.153

Mali - Tue, Oct 15, 02 11:15:14 PM
I'm doing a science fair project on this and I was wondering if this is a live chat because if it is then i was wondeing if any of you could help me find a good picture of a concave lens 66.69.73.21

Mali - Tue, Oct 15, 02 11:16:19 PM
ok guess not 66.69.73.21

Jess - Sun, Oct 20, 02 12:08:52 PM
Search "Convex & Concave Lenses" on Google.com. You get tons of info! 216.126.65.33

cassie - Wed, Oct 30, 02 10:43:58 AM
this is a very fun site 24.97.3.130

Cassie - Wed, Oct 30, 02 10:45:41 AM
Tue. oct. 30,02 Google does not give that much info yahooligans gives more 24.97.3.130

Tory - Wed, Oct 30, 02 10:46:44 AM
this is stupid 24.97.3.130

dum ass - Fri, Nov 01, 02 09:20:37 PM
I agree with dick they really suck 219.88.24.240

Bob - Tue, Nov 05, 02 01:56:03 PM
Yes it is stronger 156.63.116.142

Bob - Tue, Nov 05, 02 01:56:58 PM
Yes it is stronger 156.63.116.142

project chick - Tue, Nov 05, 02 04:18:58 PM
where can i find pictures of concave lenses 66.119.34.39

Daniela - Wed, Nov 20, 02 10:07:29 PM
Guys, wat the hell r concave lenses?????????? i need it 4 science and i cant find ne info! help me bros! 203.25.128.178

Daniela - Wed, Nov 20, 02 10:19:32 PM
HELLLLLLLLLLLLLLLLLLOOOOOOOOOOOOO!! neday now! ansa me god damn it! 203.25.128.178

ian - Fri, Nov 22, 02 08:31:56 AM
i guess everyone on this site must be american- hence why your abit thick 212.219.117.101

anonymous - Mon, Nov 25, 02 05:20:27 PM
i think the focal length is equal to a convex lens 63.185.33.34

nutty-moo - Wed, Dec 04, 02 03:58:27 PM
can u tell me 5 uses for convex and concave mirrors 62.31.32.130

dAnY - Thu, Jan 02, 03 07:06:15 PM
hEy dIcK u bIt oFfA mY nAmE 198.81.26.231

dAnY - Thu, Jan 02, 03 07:06:41 PM
tHiS iZ kInDa lIke a aIM pozEr 198.81.26.231

stupid people - Sun, Jan 05, 03 07:59:40 PM
lalalalalalalalalalalalalalalalala this is boring??????????""""""""""::::::::KIUUUUUYTRR 24.71.223.143

pepsi - Mon, Jan 06, 03 07:59:51 PM
u people need to get a life 138.88.157.248

april - Tue, Jan 07, 03 04:19:10 AM
hi i just wanted to say if you got a problem dont take it out on them. 195.144.131.14

ethelburger - Thu, Jan 09, 03 01:12:49 PM

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