Search found 363 matches

by Greg Howald
Thu Mar 04, 2021 4:02 am
Forum: Specimens, samples and slides
Topic: Cutting stone
Replies: 2
Views: 92

Re: Cutting stone

Thanks. Greg
by Greg Howald
Wed Mar 03, 2021 2:07 am
Forum: My microscope
Topic: My very first compound microscope!
Replies: 22
Views: 340

Re: My very first compound microscope!

A very nice looking scope. Be very careful now. Don't buy a second scope. They wait till nightfall when you go to sleep and breed like rabbits!
Greg
by Greg Howald
Tue Mar 02, 2021 6:23 pm
Forum: Specimens, samples and slides
Topic: Cutting stone
Replies: 2
Views: 92

Cutting stone

What are you folks using to cut stone to make thin sections?
by Greg Howald
Mon Mar 01, 2021 12:03 pm
Forum: Microscopes and optics
Topic: I don't really understand these objectives
Replies: 3
Views: 148

I don't really understand these objectives

I have one infinite scope. All the others are standard Finite 160s. In trial and error I put finite objectives in the infinite scope. Nothing would focus of course, except for the 20x. The 20x finite objective not only was able to focus but was parfocal when used with The infinite objectives. I don'...
by Greg Howald
Sun Feb 28, 2021 4:25 pm
Forum: Introduce yourself
Topic: New here
Replies: 2
Views: 83

Re: New here

Plenty of expertise here and people are helpful and encouraging.
Greg
by Greg Howald
Sun Feb 28, 2021 4:21 pm
Forum: Specimens, samples and slides
Topic: Will these melt paraffin wax?
Replies: 9
Views: 412

Re: Will these melt paraffin wax?

If you put it in xlol - xylene, the paraffin will melt. No more than room temperature required. I saw that somewhere, tried it, and it worked.
Greg
by Greg Howald
Sun Feb 28, 2021 4:11 pm
Forum: Specimens, samples and slides
Topic: I bought a set.
Replies: 10
Views: 293

I bought a set.

I bought a set of 50 prepared slides through Amazon under the name Mono Med. I found these slides to be absolutely worry free. You don't have to worry about how fragile they are. Two of them were broken when I opened the box. You don't have to clean them. The got the dirt built right in. You don't h...
by Greg Howald
Thu Feb 25, 2021 4:51 am
Forum: Illumination Techniques
Topic: Where's the white light?
Replies: 1
Views: 60

Where's the white light?

So since LED lighting is generally blue, halogen lighting is generally red and tungsten lighting is generally orange, other than daylight, where's the white light?
Greg
by Greg Howald
Wed Feb 24, 2021 3:36 am
Forum: Microscopes and optics
Topic: Amscope Plan Objectives Black vs. Silver
Replies: 3
Views: 111

Re: Amscope Plan Objectives Black vs. Silver

Better appearance ain't better performance. Be careful out there.
Greg
by Greg Howald
Tue Feb 23, 2021 10:03 pm
Forum: Microscopy accessories
Topic: Where can I get a ringing table from?
Replies: 17
Views: 445

Re: Where can I get a ringing table from?

Eye c u, you did a very good job with that.
Greg
by Greg Howald
Tue Feb 23, 2021 5:19 pm
Forum: Camera systems and imaging
Topic: Interesting comparison using Amscope cameras
Replies: 2
Views: 98

Re: Interesting comparison using Amscope cameras

You're right concerning what the numbers mean. I don't know about the settings yet. The program is too new to me.
Greg
by Greg Howald
Tue Feb 23, 2021 3:44 am
Forum: Pictures and Videos
Topic: Land of Onion Root
Replies: 2
Views: 68

Re: Land of Onion Root

You did a good job with that. You seldom fail to amaze. You seem to have the one asset I so greatly lack.

Patience.

Thanks
Greg
by Greg Howald
Tue Feb 23, 2021 3:35 am
Forum: Camera systems and imaging
Topic: Interesting comparison using Amscope cameras
Replies: 2
Views: 98

Interesting comparison using Amscope cameras

I have several scopes and cameras. The Amscope t420 is an infinity trinocular that came with an Amscope W200 wireless camera and an FM 037 reduction lens. The metallurgical trinocular came with an Amscope MU1403 usb camera and an FM 050 reduction lens. The MU 1403 gives a mirror image as expected be...
by Greg Howald
Tue Feb 23, 2021 2:40 am
Forum: Specimens, samples and slides
Topic: Crazy glue
Replies: 1
Views: 110

Re: Crazy glue

Not a good mounting. In fact crazy or super glue is especially dangerous stuff around optics or any glass surface. This glue gasses for up to 24 hours. It is used in criminal forensic science to bring out finger prints. Set the specimen on a piece paper. Put a glob of superglue on tin foil next to i...
by Greg Howald
Tue Feb 23, 2021 2:28 am
Forum: Microscopy accessories
Topic: Where can I get a ringing table from?
Replies: 17
Views: 445

Re: Where can I get a ringing table from?

I wonder if we could ask Oliver to make this available in his store?
Greg
by Greg Howald
Tue Feb 23, 2021 2:19 am
Forum: Microscopy accessories
Topic: What are the uses of 530nm and 147.3nm wave plates
Replies: 8
Views: 2035

Re: What are the uses of 530nm and 147.3nm wave plates

I think ( not really sure) the wave plates will filter out color in particular ranges of the wavelength of color. Red has a range. Blue has a range. I doubt if you could use more than one plate per slot. In my metallurgical scope of I place a red filter in the top light and a blue filter in illumina...
by Greg Howald
Sun Feb 21, 2021 4:08 pm
Forum: Illumination Techniques
Topic: Phase Contrast Question
Replies: 5
Views: 202

Re: Phase Contrast Question

At lower magnification levels I have read on the forum that plan objectives don't seem to make a great difference in what is seen in your scope. I have them in 4, 10, and 40x. I don't see much difference and seldom use them. There are differences of course and that can be measured. Whether you can d...
by Greg Howald
Thu Feb 18, 2021 4:28 pm
Forum: Microscopes and optics
Topic: Quartz Birefringence
Replies: 15
Views: 347

Re: Quartz Birefringence

Also remember that there are no perfect crystals in nature so you may have to play with it a bit. I usually do.
Greg
by Greg Howald
Thu Feb 18, 2021 4:23 pm
Forum: Microscopes and optics
Topic: Comparison of AmScope's Plan & Non-Plan Objectives
Replies: 30
Views: 2859

Re: Comparison of AmScope's Plan & Non-Plan Objectives

Things I have noticed regarding plan objectives. 1. They work best with plan Eyepieces. 2. In a metallurgical scope where top light passes through the objective to illuminate the specimen, plan objectives give outstanding results with plan Eyepieces. 3. In a standard bottom lit scope where light pas...
by Greg Howald
Wed Feb 17, 2021 9:52 pm
Forum: Microscopes and optics
Topic: Stereo monovision
Replies: 13
Views: 240

Re: Stereo monovision

I'm not very smart when it comes to things like this but what if you coated it with some of that silicone spray lubricant?
Greg
by Greg Howald
Wed Feb 17, 2021 5:04 pm
Forum: Microscopes and optics
Topic: Stereo monovision
Replies: 13
Views: 240

Re: Stereo monovision

That's just sad😔. Pot metal I suppose.
by Greg Howald
Wed Feb 17, 2021 1:33 pm
Forum: My microscope
Topic: Finally photos of my scopes
Replies: 6
Views: 301

Re: Finally photos of my scopes

I have a very small space. I've been wanting to throw out the furniture to take over the living room but, alas, my wife says refutes that idea. I do have a nice range of scopes. There are more expensive scopes for every one of these tasks but I find that increasing costs and quality at this point in...
by Greg Howald
Wed Feb 17, 2021 12:56 pm
Forum: My microscope
Topic: Finally photos of my scopes
Replies: 6
Views: 301

Re: Finally photos of my scopes

No. I bought them. I'm not set up for that. I don't have a garage so there's no room. You can get thin sections on e bay from time to time and you can buy them from Ward Science. They are expensive at Wards. A dozen cost $470.00.
Greg
by Greg Howald
Wed Feb 17, 2021 5:51 am
Forum: My microscope
Topic: Finally photos of my scopes
Replies: 6
Views: 301

Re: Finally photos of my scopes

Sure. The petrographic scope is used to identify minerals and rocks. That becomes difficult when you consider there are some 4000 minerals. The b660 is used for finding critters in pond water and such. I use the stereo scope for careful study of large things like whole leaves and vegetation. The met...
by Greg Howald
Wed Feb 17, 2021 3:33 am
Forum: Microscopy accessories
Topic: Carry/Storage Case For Swift 380T
Replies: 9
Views: 279

Re: Carry/Storage Case For Swift 380T

So I went to the second hand store and picked up a piece of soft luggage for next to nothing, through in some pads, a strap for bracing and an extra padded bag for Eyepieces and such and now I can wheel the scope around where ever I want and it stays in the upright position. Work out the details wit...
by Greg Howald
Wed Feb 17, 2021 3:25 am
Forum: Microscopes and optics
Topic: Stereo monovision
Replies: 13
Views: 240

Re: Stereo monovision

Check two things
1. Are Eyepieces the same size.
2. Are both Eyepieces all the way in.
I've had problems with both and the result of my inattention matches your results.
Other than that, the storehouse of my small mind is empty.
Greg
by Greg Howald
Wed Feb 17, 2021 2:44 am
Forum: My microscope
Topic: Finally photos of my scopes
Replies: 6
Views: 301

Finally photos of my scopes

In the past twelve months I have purchased 6 new scopes. Here they are.
Not shown is a t420c which gives excellent performance. All are Amscope.
Greg