Search found 187 matches

by Oliver
Sun Jan 24, 2016 5:12 pm
Forum: Beginner's corner
Topic: 10x only or not?
Replies: 6
Views: 1739

Re: 10x only or not?

I would guess that the lower depth of field of the 40x objective caused you to have focusing problems. It might (as a matter of fact) have been in focus, but because of the lower depth of field areas above and below the focus plane might have interfered, and therefore given you a subjective impressi...
by Oliver
Wed Jan 20, 2016 6:22 am
Forum: Pictures and Videos
Topic: Home made blood smear with Wrights Giemsa stain
Replies: 7
Views: 2080

Re: Home made blood smear with Wrights Giemsa stain

Hello, and mounted with transformer varnish what is transformer varnish? Is it the "paint" that holds the coil of a transformer in place? If so, where did you get it and is there any shrinkage when drying? Is it dissolvable in alcohol? I am asking, because I am looking for a cheap, safe and fast dry...
by Oliver
Sun Dec 27, 2015 11:55 pm
Forum: Miscellaneous
Topic: Culture media
Replies: 6
Views: 2168

Re: Culture media

Hello, Hay infusions are sometimes used to culture paramecia and other microorganisms, but the problem is that they also promote rapid bacterial growth. The bacteria (while needed as a food source) may soon overgrow the Paramecia and reduce the oxygen content of the water (causing everything to die ...
by Oliver
Fri Dec 25, 2015 6:46 am
Forum: Identification help
Topic: Not Sure What This Is
Replies: 3
Views: 1756

Re: Not Sure What This Is

Hello and welcome to the forum. It looks like a "test" of a testate amoeba. Tests are the shells. As a matter of fact, it is not only the empty shell, but you can also see the pseudopods extending from it, so it is alive. The pseudopods are the clear jelly-like extensions from the test. Here are som...
by Oliver
Thu Dec 24, 2015 6:09 am
Forum: Miscellaneous
Topic: Season's Greetings
Replies: 4
Views: 1651

Season's Greetings

I would like to wish all members of the forum and all readers of this forum a Merry Christmas and Season's greetings!

At this point I would also like to welcome all new forum members, who have recently joined the forum.

Oliver
by Oliver
Wed Dec 23, 2015 1:31 pm
Forum: Camera systems and imaging
Topic: Monocular vs Binocular/Trinocular imaging question
Replies: 9
Views: 3715

Re: Monocular vs Binocular/Trinocular imaging question

If you want to do much photography, then the convenience (in my opinion) of a trinocular outweighs many other considerations. If you want to capture fast moving organisms, then light plays a much more important role, but if you observe static specimens, then it really does not matter if your exposur...
by Oliver
Sun Dec 20, 2015 6:23 am
Forum: About the website, the magazine and this forum
Topic: Is there an annoying 'robo editor' of posts we may take more than four minutes to type out?!!
Replies: 19
Views: 9423

Re: Is there an annoying 'robo editor' of posts we may take more than four minutes to type out?!!

Other sites suggested that it might also be worth trying to clear your browser cookies (history). This forces the forum to reset the cookies which it needs for timing.

Oliver
by Oliver
Mon Dec 14, 2015 11:03 pm
Forum: Pictures and Videos
Topic: Can any one I.d. This plant
Replies: 3
Views: 534

Re: Can any one I.d. This plant

Looks similar to a plant trichome: http://waynesword.palomar.edu/images/acucor1b.jpg
by Oliver
Mon Dec 14, 2015 11:44 am
Forum: Beginner's corner
Topic: Power Standarization questions
Replies: 27
Views: 4137

Re: Power Standarization questions

Increasing optical zoom increass the amount of incoming light, giving a cleaar image Well, actually increasing the zoom decreases the light, because you are looking at a smaller part of the specimen. The light of this "small part" is then magnified, hence spread out over a larger area. This reduces...
by Oliver
Fri Dec 11, 2015 1:17 pm
Forum: Microscopes and optics
Topic: defective 5x DIN?
Replies: 11
Views: 2020

Re: defective 5x DIN?

1. Could it be that the focus lock lever of your microscope (if it has one) prevents the full focussing? it can be found next to one of the coarse focus knobs. 2. Some microscopes allow for the adjustment of the focus travel with a screw. this is to prevent the stage from crashing into the objective...
by Oliver
Tue Dec 08, 2015 9:26 am
Forum: Introduce yourself
Topic: Hello everyone travis is here.
Replies: 9
Views: 2764

Re: Hello everyone travis is here.

Travis,
The stacking of red blood cells that you refer to is called rouleaux formation. There a Wikipedia article on it:
https://en.wikipedia.org/wiki/Rouleaux
Oliver.
by Oliver
Mon Dec 07, 2015 6:23 am
Forum: Microscopes and optics
Topic: Buying Sites for the "Big 4"
Replies: 5
Views: 1343

Re: Buying Sites for the "Big 4"

Hello,
You have to contact the respective company directly. For Leica, visit
http://www.leica-microsystems.com/home/
and click the contact link in the menu.
Oliver
by Oliver
Tue Sep 29, 2015 6:49 pm
Forum: Miscellaneous
Topic: Can you dissect a Paramecium?
Replies: 4
Views: 2026

Re: Can you dissect a Paramecium?

The tool with the knobs is called a micromanipulator. It is used to remove the nucelus of cells and can be used to inject sperm cells into egg cells when doing In-Vitro fertilization (ivf). Dissecting a Paramecium does not result in more information. The contents is fluid and therefore any disturban...
by Oliver
Fri Sep 25, 2015 6:06 pm
Forum: About the website, the magazine and this forum
Topic: Collecting articles and images again!
Replies: 1
Views: 4088

Collecting articles and images again!

Dear forum members,
I am collecting articles and images again for the upcoming issue of the magazine. All contributions are welcome!
Greetings, Oliver.
by Oliver
Mon Aug 31, 2015 6:08 am
Forum: Pictures and Videos
Topic: microbe in sebum? unsure
Replies: 11
Views: 2222

Re: microbe in sebum? unsure

Looks like a scale from a butterfly, especially the last two pictures.
https://en.m.wikipedia.org/wiki/Scale_( ... n_anatomy)

Oliver.
by Oliver
Sat Aug 29, 2015 5:28 pm
Forum: Introduce yourself
Topic: Fly:
Replies: 6
Views: 2423

Re: Fly:

If I have a question can I ask you? The only problem, this camera is never constant even with exactly the same settings. 1. You have to set the camera to manual and use the same exposure time and sensitivity. You make one test picture, remember the settings and then use them again. 2. When using st...
by Oliver
Sat Aug 29, 2015 12:51 pm
Forum: Introduce yourself
Topic: new member
Replies: 3
Views: 1746

Re: new member

Welcome! In the My Microscope section, you can post a picture of your microscope.
Oliver.
by Oliver
Fri Aug 28, 2015 6:44 am
Forum: Resources (online, books etc.)
Topic: Some Book Talk:
Replies: 7
Views: 2686

Re: Some Book Talk:

I also have this book, used it for university study, it was one of the standard textbooks that I used. It is mostly about bacteria, microbiological methods (bacterial culture etc), chemical structure, and such. It is not specifically about microscopy, but gives a good basic university level introduc...
by Oliver
Wed Aug 26, 2015 6:22 am
Forum: Microscopes and optics
Topic: Leitz power unit/bulb troubleshoot
Replies: 18
Views: 4404

Re: Leitz power unit/bulb troubleshoot

Hello,
Check the voltage directly at the two "feet" (wires) of the bulb, with the bulb still connected. Maybe there is a problem with the socket to bulb connection due to corrosion. The picture shows that the bulb wires seem to be discolored at the bottom, which could indicate corrosion.

Oliver.
by Oliver
Tue Aug 25, 2015 7:13 pm
Forum: Beginner's corner
Topic: xylol - xylene?
Replies: 13
Views: 5026

Re: xylol - xylene?

Hello,
I found a comprehensive guide to cleaning the microscope here (from Zeiss):
http://www.well.ox.ac.uk/_asset/file/th ... oscope.pdf

Oliver
by Oliver
Tue Aug 25, 2015 6:38 pm
Forum: Beginner's corner
Topic: xylol - xylene?
Replies: 13
Views: 5026

Re: xylol - xylene?

Hello, be careful when using xylene /xylol for cleaning. These solvents might dissolve the kit which glues the lenses into place in the objective. You should use a highly volatile solvent (30 ethanol:70 ether mixture), which evaporates quickly and one which can not seep much behind the lenses. This ...
by Oliver
Mon Aug 24, 2015 10:15 pm
Forum: Camera systems and imaging
Topic: what kind of adapter to use DSLR on a monocular scope?
Replies: 15
Views: 5733

Re: what kind of adapter to use DSLR on a monocular scope?

Hello, I really don't want to use a usb camera...already have >1000 invested in my dslr which is 18megapixels...pretty sure it will blow amscope 3mp camera out of water (but again, I'm noob and don't know for sure)... Yes, the quality might indeed be better, not only because of the camera resolution...
by Oliver
Fri Aug 21, 2015 7:02 pm
Forum: Beginner's corner
Topic: Stereo Microscope for a Beginner
Replies: 22
Views: 6132

Re: Stereo Microscope for a Beginner

Hello, The microscopes in your link are all somewhat different and they can not be compared directly. You first have to define your preferences and "needs", but I admit that this is difficult to do if you intend to use them for hobby purposes. Ultimately it boils down to the simple formula: The best...
by Oliver
Fri Aug 21, 2015 7:59 am
Forum: Beginner's corner
Topic: can I use a UV objective for darkfield?
Replies: 13
Views: 2812

Re: can I use a UV objective for darkfield?

Hello, High NA objectives often do not work well for darkfield, but maybe the iris can compensate this (link: http://www.olympus-ims.com/en/microscopes/faq/#15). UV objectives are made of a material which allows UV light to go through (sample illuminated with UV from top, with the UV light passed th...
by Oliver
Mon Aug 10, 2015 8:14 pm
Forum: Microscopes and optics
Topic: Where can I buy a bulb for my Leitz SM Lux in the UK?
Replies: 9
Views: 3106

Re: Where can I buy a bulb for my Leitz SM Lux in the UK?

In response to Gekko's post concerning the size of the LED and the tungsten filament, I wonder if it is possible to use a diffuser above the LED. I once experimentally tried to use LEDs but the illumination was very uneven. You might also want do read the article "Do-it-yourself Microscope LED Illum...
by Oliver
Mon Aug 10, 2015 8:06 pm
Forum: Introduce yourself
Topic: Hi, from Alberta Canada
Replies: 18
Views: 5327

Re: Hi, from Alberta Canada

Hello and welcome to the forum. Depending on your experience, you might also consider getting a relatively low cost (but decent) no-name microscope first, to keep the initial investment low. You can always spend more later, when you have more experience. Phase contrast can become expensive quite qui...
by Oliver
Wed Aug 05, 2015 8:42 am
Forum: Pictures and Videos
Topic: In Deer Feces...
Replies: 16
Views: 2681

Re: In Deer Feces...

The last picture looks like the spirals formed by xylem tissue in plants (for water transport and for strengthening support).
Here is a link with a picture: http://sydney.edu.au/science/biology/le ... 2AB6.shtml

Oliver
by Oliver
Wed Jul 15, 2015 7:42 pm
Forum: Camera systems and imaging
Topic: Omax Camera with MTV-3 or Olympus Trinocular
Replies: 7
Views: 3719

Re: Omax Camera with MTV-3 or Olympus Trinocular

Hello, The camera in the link (with the 0.5x reduction lens) can be inserted directly instead of an eyepiece. Try the following: 1. remove the mtv3/cmount from the BH2 trinocular head and insert a regular eyepiece instead. This should work, provided that the tube of the trinocular head has the same ...
by Oliver
Wed Jul 15, 2015 11:11 am
Forum: Pictures and Videos
Topic: Rotifer and Mite Video
Replies: 3
Views: 930

Re: Rotifer and Mite Video

Hello,

Just put the identifier into the tags, and not the whole link:

Try this:
[youtube]hsACOUG1z8M[/youtube]

Not this:
[youtube]https://www.youtube.com/watch?v=hsACOUG1z8M[/youtube]

And *uncheck* the "Disable BBCode" option.

Oliver.
by Oliver
Fri Jul 10, 2015 5:06 am
Forum: Pictures and Videos
Topic: Can't Post Pictures Anymore!!!
Replies: 13
Views: 2546

Re: Can't Post Pictures Anymore!!!

1. copy the link to the picture into the clipboard.
2. paste it into the post
3. add the [img][/img] tags arround the url

Oliver.