Search the web
Sign In
New User? Sign Up
Microscope · Microscopy as a hobby or profession.
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Want your group to be featured on the Yahoo! Groups website? Add a group photo to Flickr.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
Messages 43706 - 43735 of 53484   Newest  |  < Newer  |  Older >  |  Oldest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date v
43735
Charles Guevara <icecilliate123@...> wrote: "Thanks for the terrific 'web-resource: buyersguide content ' you have shared with all, 'germpore'. Sorry to say I...
germpore
Offline Send Email
Apr 25, 2008
7:47 pm
43734
Some how I mangled that baldly. Here is a better try -gordon From: "sowjanyaaa" <sowjanyaaa@...> Date: Fri Apr 25, 2008 1:39 am Subject: hi can i join in...
gordon.couger@...
gcouger
Offline Send Email
Apr 25, 2008
5:22 pm
43733
From: "sowjanyaaa" <sowjanyaaa@...> Date: Fri Apr 25, 2008 1:39 am Subject: hi can i join in u r group Spending some time reading the old messages and...
Gordon Couger
gcouger
Offline Send Email
Apr 25, 2008
4:31 pm
43732
... that he could find himself locked into buying new at dealer prices. That seems very probable. Also, few of the Meiji listings were for optics, accessories...
Ron Lisk
shiamr
Online Now Send Email
Apr 25, 2008
3:58 pm
43731
... Hi, On the other hand, Meiji does have a plethora of accessories available if you buy new. I don't think the new, high-quality generation of Meiji...
DonH
djhmis
Offline Send Email
Apr 25, 2008
3:36 pm
43730
Hi Fred, By far the most comprehensive text on microtome sharpening and sections is Steedman's "Section Cutting for Microscopy". A scan of it is archived...
Kevin Sunley
kswpg
Offline Send Email
Apr 25, 2008
3:24 pm
43729
Hi Bob, Ref yr last e-mail. I would probably go for the Leitz SM. It's a lot of microscope for the price. But I am somewhat conservative and apart from some...
Ron Lisk
shiamr
Online Now Send Email
Apr 25, 2008
3:19 pm
43728
Greetings! Thanks to Arthur at Roseoptics I now have a hand microtome with an AO 940 microtome knife and I'm looking for sharpening instructions. I've checked...
kevj210
Offline Send Email
Apr 25, 2008
2:43 pm
43727
Selwyn, et.al; For me, this brief discussion has been an invaluable joy. Thanks to you all! Summing up my perspective, and addressing Selwyn's recent input: ...
William Carter
ddd_video
Offline Send Email
Apr 25, 2008
2:38 pm
43726
... that ... for ... never ... a ... loss ... for ... to ... Hi I've found Loveland's 'Photomicrography: A comprehensive Treatise' 1970, vol II, very helpful...
pennine56
Offline Send Email
Apr 25, 2008
12:41 pm
43725
Hi, Thanks for the interesting responses. There seem to be agreement that a phase ring does not affect resolution when an objective is used for BF. However,...
A. S. St Leger
selwynstleger
Offline Send Email
Apr 25, 2008
12:11 pm
43724
Hello all, I recently acquired a very nice Nikon 10X Filar EP; one of the benefits with this is a vernier that enable very precise measurement. Does anyone...
MikeA
hwandre
Offline Send Email
Apr 25, 2008
11:47 am
43723
Hi Charles, I have used this label of "2nd tier" in my own descriptions of microscope brands. It refers mainly to the company size and market share, not...
J. G. McHone
petrographic...
Offline Send Email
Apr 25, 2008
11:33 am
43722
Hello, I'm, new to this group. When I was a kid I really liked microscopes and what you can see with them. I recently decided to get back into it and decided...
mthess60
Offline Send Email
Apr 25, 2008
7:33 am
43721
Ross; Thanks for that... I understand my confusion now. Seems that the formula for an obscured Airy diffraction pattern (in this case, a phase ring in the...
William Carter
ddd_video
Offline Send Email
Apr 25, 2008
5:41 am
43720
Wikipedia describes the phase annulus as being located at a conjugate of the aperture plane (entrance pupil). This makes sense, because otherwise some portion...
William Carter
ddd_video
Offline Send Email
Apr 25, 2008
5:41 am
43719
Hi All My 2 cents worth. I have just spent the last 3 hours comparing a Zeiss x40 N.a 0.65 plan achromat with a Zeiss x40 N.a 0.65 Ph2 plan achromat in...
Ross Ferris
rosco71nz
Offline Send Email
Apr 25, 2008
4:30 am
43718
Hi Gordon, and group! Your wisdom , experience, and intrests ( all which you widely share, Gordon) are wonderful resource all know how to engage, simply 'post...
Charles Guevara
icecilliate123
Offline Send Email
Apr 25, 2008
2:12 am
43717
A while back, I commented on my satisfaction with a Meiji stereo. Some discussion was had on overall quality, and there was some speculation as to the...
interlofer
Offline Send Email
Apr 24, 2008
11:11 pm
43716
Charles, We don't have the number of Reichart scopes in the US that we do AO, Leitz & Zeiss. I seem to see more reflected light model than transmitted light...
Gordon Couger
gcouger
Offline Send Email
Apr 24, 2008
8:02 pm
43715
Hi everyone I thought that the phase annulus was located in the back focal plane of the objective (where the diffraction pattern is formed). Therefore would...
Nick
njwitham
Offline Send Email
Apr 24, 2008
5:49 pm
43714
William, maybe I was confusing you here, but I was talking 2 different things. A phase lens used in brightfield is not limited in resolution, as it still has...
rvanwezel
Offline Send Email
Apr 24, 2008
4:04 pm
43713
... Depending on the AO model, you should specify the mirror assembly or plan on doing some fabrication. For example, there is not much on the base of a Series...
blekenbleu
Offline Send Email
Apr 24, 2008
3:47 pm
43712
... perfectly ... but ... Hi, Re. the two SM-Luxs you mention. The first from Mel Sobel will not achieve Kohler lighting and looks like it's fitted with the...
Steve Boulton
folkysteve
Offline Send Email
Apr 24, 2008
3:07 pm
43711
Thanks very much indeed for posting these vids. I have seen dense concentrations of bacteria in long established samples but have never seen a ring or swarming...
Ron Lisk
shiamr
Online Now Send Email
Apr 24, 2008
2:54 pm
43710
... Hi Charla, Thank you for the kind words. Actually, in viewing my movies after not looking at them for many months I can see *much* room for improvement in...
Thomas Ashcraft
heliotown27
Offline Send Email
Apr 24, 2008
1:26 pm
43709
I have imaged the lines on A pellucida with a 90/1.25 Lomo Ph objective using oblique light. And also by off-setting the phase condenser itself.. If the n.a....
willdo-1
edfwilli
Offline Send Email
Apr 24, 2008
11:10 am
43708
Rule of thumb? It seems to me that a lens whose entrance pupil is reduced by one-half of it's collective area, has lost a significant portion of it's ...
William Carter
ddd_video
Offline Send Email
Apr 24, 2008
10:09 am
43707
Yes, any phase telescope from any manufacturer should work. I switch from Leitz to Lomo to PZO and notice no difference. best wishes Mark ... [Non-text...
Mark Burgess
fwalgae
Offline Send Email
Apr 24, 2008
9:06 am
43706
I have seen mentioned that an annulus 0.71 times the NA of the objective gives full resolution. But most phase annuli are roughly half the objective's NA. In...
rvanwezel
Offline Send Email
Apr 24, 2008
7:24 am
Messages 43706 - 43735 of 53484   Newest  |  < Newer  |  Older >  |  Oldest
Advanced
Add to My Yahoo!      XML What's This?

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help