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Condenser

Condenser

(Science: microscopy) in microscopy, the lens mounted before the microscope stage, which transmits light to the object. There are two main categories of condensers: (1) bright field and (2) dark field. Bright field condensers are of four distinct types: (a) Abbe condenser,, an uncorrected condenser composed of two separable lenses, (b) aplanatic condenser, (c) achromatic condenser which has full corrections for colour and spherical aberrations, (d) aplanatic achromatic condenser. The dark field condenser for low powers may be nothing more than a low-power bright field condenser with a central stop. Medium- or high-powered dark field condensers are usually of the cardioid or paraboloid type. The lamp lens is loosely called a condenser lens, but light-collecting lens is a more definite term. All microscope condensers must be carefully focused and aligned for best results.


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Extra Light For Compound Light Microscope ???

... objective lens.the lens closer to the eye is called ocular lens or eyepiece.the object is illuminated by light beneath it.a third lens called condenser lens is located between the object and the light source and it serve to focus the light on the object." The above one is what given in ...

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by Kehsibashok
Sun Jul 28, 2013 6:12 am
 
Forum: Cell Biology
Topic: Extra Light For Compound Light Microscope ???
Replies: 1
Views: 1387

Re: Theories - Origin of Life

... And he threw it out. He redesigned the equipment : he said, I was over-cautious. This is not likely to explode. He interchanged the spark and the condenser and he re-ran the experiment, and this time he got amino acids and not hydrocarbons , and he said, Ah ha! And he published. Thus we have the ...

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by scottie
Mon Oct 03, 2011 2:24 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929138

Re: Neubauer haemocytometer-problem

... without microscope you have to see the bars of divisions as an scratch on the two parts of chamber. after, under 40x objetive and playing with the condenser and power source to have less light you have to see the squares, but put any liquid between both glasses. Buena suerte

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by protold
Wed Jul 20, 2011 5:39 am
 
Forum: Cell Biology
Topic: Neubauer haemocytometer-problem
Replies: 2
Views: 2366

Egg Yolk Coacervates & pH Imaging

... they seem to get overwhelmed by background color coming from the lightsource. I could get a 100x objective cheaply enough (about $40) and have a condenser lens that gets the light in a good shaped cone to send up and a few precision photographic enlarger lenses of three strengths with irises ...

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by GaryGaulin
Tue Mar 03, 2009 3:02 pm
 
Forum: General Discussion
Topic: Egg Yolk Coacervates & pH Imaging
Replies: 0
Views: 3798

microscope magnification

... You can see nuclei and some structure without staining using differential interference contrast or DIC (see here ) but you will need a specific condenser. I suspect that this film used that technique, but I am no specialist.

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by canalon
Sun Jan 06, 2008 3:08 am
 
Forum: Microbiology
Topic: microscope magnification
Replies: 12
Views: 20742
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