Search found 4026 matches
- Wed Jan 03, 2024 10:30 am
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 118588
Re: Dichromatic Illumination?
My solution to the above post is to drill a hole into the end and insert an optic fibre. Then light proof the whole thing, except for the end of the projected fibre. . I regret to say, you are likely to be disappointed … Fibre Optics have an ‘exit angle’ MichaelG. . Here are some reasonably self-ex...
- Tue Jan 02, 2024 6:42 pm
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 118588
- Tue Jan 02, 2024 1:30 pm
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 118588
Re: Dichromatic Illumination?
The subject gets a bit heavy, Gerry … but this is a good introduction:
https://www.animations.physics.unsw.edu ... mixing.htm
The visual perception of a particular colour does not necessarily mean that colour’s actual wavelength is present.
MichaelG.
https://www.animations.physics.unsw.edu ... mixing.htm
The visual perception of a particular colour does not necessarily mean that colour’s actual wavelength is present.
MichaelG.
- Tue Jan 02, 2024 9:03 am
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 118588
Re: Dichromatic Illumination?
… I plan to use aluminium foil to cover the light head; it may make a slightly brighter beam, as well as blocking the light leakage. An impressive start !! In an ideal world, however, you would polish those sawn faces and get total internal reflection [ big trade-off in the realm of reward-for-effo...
- Mon Jan 01, 2024 8:25 pm
- Forum: Resources (online, books etc.)
- Topic: Online short course by OU - UK only
- Replies: 3
- Views: 3795
Re: Online short course by OU - UK only
. Thanks for the link … at my age, I was rather pleased to read this: You can start this course right now without signing-up. Click on any of the course content sections below to start at any point in this course. If you want to be able to track your progress, earn a free Statement of Participation,...
- Fri Dec 29, 2023 8:55 pm
- Forum: Illumination Techniques
- Topic: Dangerous-Just Thinking Again!
- Replies: 14
- Views: 5447
Re: Dangerous-Just Thinking Again!
. Sorry, Gerry … I may not have been sufficiently explicit I was referring you to my post #8 in that discussion … which recommends looking at the Adafruit NeoPixels [from the linked page.] …. Red, green and blue LEDs are integrated alongside a driver chip into a tiny surface-mount package controlled...
- Fri Dec 29, 2023 1:10 pm
- Forum: Illumination Techniques
- Topic: Dangerous-Just Thinking Again!
- Replies: 14
- Views: 5447
- Wed Dec 27, 2023 10:59 pm
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 118588
- Wed Dec 27, 2023 7:38 pm
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 118588
Re: Dichromatic Illumination?
It may be worth exploring these: /https://www.adafruit.com/category/168url
.
Ada deserves a lot of credit for her development work, but I should mention that even-cheaper ‘clones’ are to be found on ebay.
MichaelG.
.
Ada deserves a lot of credit for her development work, but I should mention that even-cheaper ‘clones’ are to be found on ebay.
MichaelG.
- Wed Dec 27, 2023 7:20 am
- Forum: Home-made microscope adaptations
- Topic: My Hobby Scope Set-up (WIP)
- Replies: 5
- Views: 2301
Re: My Hobby Scope Set-up (WIP)
.
In the immortal words sung by Julie Andrews:
MichaelG.
In the immortal words sung by Julie Andrews:
I wish I could be so meticulous and thorough.… a very good place to start.
MichaelG.
- Tue Dec 26, 2023 2:52 pm
- Forum: Introduce yourself
- Topic: Greetings from London, UK
- Replies: 1
- Views: 2287
Re: Greetings from London, UK
Welcome aboard !
That is a magnificent ‘first microscope’ … !!!
MichaelG.
That is a magnificent ‘first microscope’ … !!!
MichaelG.
- Tue Dec 26, 2023 6:32 am
- Forum: Microscopes and optics
- Topic: Is my head broken/misaligned?
- Replies: 10
- Views: 3218
Re: Is my head broken/misaligned?
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Ron Green’s brilliant paper is available here, in several formats: https://archive.org/details/APracticalG ... ollimation
I suggest you skim through it, for an appreciation of the problem, and then return the Amscope.
MichaelG.
Ron Green’s brilliant paper is available here, in several formats: https://archive.org/details/APracticalG ... ollimation
I suggest you skim through it, for an appreciation of the problem, and then return the Amscope.
MichaelG.
- Mon Dec 25, 2023 5:51 pm
- Forum: Beginner's corner
- Topic: Question Regarding Darkfield Condensers
- Replies: 39
- Views: 117098
Re: Question Regarding Darkfield Condensers
Thanks for that ^^^
MichaelG.
MichaelG.
- Mon Dec 25, 2023 7:59 am
- Forum: Microscopes and optics
- Topic: Thinking about buying a Neophot 21, need information about it
- Replies: 9
- Views: 6170
Re: Thinking about buying a Neophot 21, need information about it
On a happier note: the ‘scope obviously has great potential
[https://www.meteorite-times.com/Back_ ... n_Desk.htm
[https://www.meteorite-times.com/Back_ ... n_Desk.htm
- Mon Dec 25, 2023 7:44 am
- Forum: Microscopes and optics
- Topic: Thinking about buying a Neophot 21, need information about it
- Replies: 9
- Views: 6170
Re: Thinking about buying a Neophot 21, need information about it
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I haven’t found a downloadable version, but this appears to be the the document you need:
https://gandmtools.co.uk/product/carl ... 80214876/
MichaelG.
I haven’t found a downloadable version, but this appears to be the the document you need:
https://gandmtools.co.uk/product/carl ... 80214876/
MichaelG.
- Mon Dec 25, 2023 7:32 am
- Forum: Microscopes and optics
- Topic: Thinking about buying a Neophot 21, need information about it
- Replies: 9
- Views: 6170
Re: Thinking about buying a Neophot 21, need information about it
I suggest you ignore the Xenon lamp option, and concentrate on the rest of it.
They are expensive, short-lived, and hazardous.
MichaelG.
They are expensive, short-lived, and hazardous.
MichaelG.
- Mon Dec 25, 2023 7:18 am
- Forum: My microscope
- Topic: FOR STARTERS
- Replies: 6
- Views: 3539
Re: FOR STARTERS
I think you have made an excellent start with the new microscope … methodical tests, using an easily recognisable specimen * Well done ! . As you evidently have an iPhone, my tip would be to grab these two very useful Apps: https://apps.apple.com/gb/app/koehler-tutor/id1281328178 https://apps.apple....
- Sun Dec 24, 2023 8:36 pm
- Forum: Beginner's corner
- Topic: Question Regarding Darkfield Condensers
- Replies: 39
- Views: 117098
Re: Question Regarding Darkfield Condensers
Thanks for the correction … I did wonder, but the screws on mine look much longer so I wasn’t sure.
MichaelG.
MichaelG.
- Sun Dec 24, 2023 4:54 pm
- Forum: Beginner's corner
- Topic: Question Regarding Darkfield Condensers
- Replies: 39
- Views: 117098
Re: Question Regarding Darkfield Condensers
Okay. After reading everything I could find in the forum, carefully checking specs, and measuring my condenser holder, I decided to try this Spencer condenser … I have a nice example of that one, in a good box complete with some funnel stops Perhaps most relevant to your difficulty … it’s assembled...
- Sat Dec 23, 2023 6:16 am
- Forum: Illumination Techniques
- Topic: Experience with µstuff's Flashgun Microscope Adapter.
- Replies: 3
- Views: 1827
Re: Experience with µstuff's Flashgun Microscope Adapter.
I was not familiar with your Flashgun … but this appears to be it: https://uk.neewer.com/products/on-off-camera-flash-66600090 From what you write, it does seem that you simply need more light on the specimen … but before making a potentially expensive purchase, I would investigate the ‘metering’ as...
- Fri Dec 22, 2023 8:38 am
- Forum: Pictures and Videos
- Topic: December 2023
- Replies: 2
- Views: 808
December 2023
As the year draws to a close … it’s worth viewing/downloading the December 2023 image from the RMS calendar:
https://www.rms.org.uk/library/rms-calendar.html
MichaelG.
https://www.rms.org.uk/library/rms-calendar.html
MichaelG.
- Fri Dec 22, 2023 8:28 am
- Forum: Pictures and Videos
- Topic: Three week out of date coleslaw juice
- Replies: 6
- Views: 2465
Re: Three week out of date coleslaw juice
WARNING : When coleslaw or any similar food product reaches its expiration date, it's a good idea to err on the side of caution and discard it. Signs of spoilage may include off smells, changes in color or texture, or the presence of mold. [***] ####://watermelongame.org] Watermelon Game [/***] The...
- Fri Dec 22, 2023 6:39 am
- Forum: About the website, the magazine and this forum
- Topic: New trouble uploading images...
- Replies: 19
- Views: 16970
Re: New trouble uploading images...
To keep the experiment simple … I am about to try uploading the same small scan that I did before: . and yes, I get the same error message. MichaelG. . Edit : __ the details are beyond my comprehension, but this appears to be a common problem with phpBB . https://www.phpbb.com/community/viewtopic.ph...
- Tue Dec 19, 2023 12:53 pm
- Forum: Microscopes and optics
- Topic: Focus mechanism of Leitz Wetzlar Dialux
- Replies: 9
- Views: 2877
Re: Focus mechanism of Leitz Wetzlar Dialux
Thanks, Frankiev … I will have a dig-around later
MichaelG.
MichaelG.
- Tue Dec 19, 2023 7:54 am
- Forum: Microscopes and optics
- Topic: Focus mechanism of Leitz Wetzlar Dialux
- Replies: 9
- Views: 2877
Re: Focus mechanism of Leitz Wetzlar Dialux
It would probably be very helpful if you could provide a link to:
MichaelG.
a series of excellent photos uploaded by gpmathews
MichaelG.
- Sun Dec 17, 2023 9:12 am
- Forum: About the website, the magazine and this forum
- Topic: New trouble uploading images...
- Replies: 19
- Views: 16970
Re: New trouble uploading images...
Yeah … well ^^^Sure Squintsalot wrote: ↑Sat Dec 16, 2023 4:54 pmI've tried ALL formats, just to see....
But I only load .jpegs to this site and even the same images I've loaded to other threads on this site won't upload.
- Sun Dec 17, 2023 9:04 am
- Forum: About the website, the magazine and this forum
- Topic: New trouble uploading images...
- Replies: 19
- Views: 16970
Re: New trouble uploading images...
You’re welcome !
MichaelG.
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Edit: __ it is, of course, a photo, of a photocopy, of an illustration in a book
MichaelG.
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Edit: __ it is, of course, a photo, of a photocopy, of an illustration in a book
- Sun Dec 17, 2023 5:30 am
- Forum: About the website, the magazine and this forum
- Topic: New trouble uploading images...
- Replies: 19
- Views: 16970
Re: New trouble uploading images...
Testing
MichaelG.
MichaelG.
- Sat Dec 16, 2023 9:52 am
- Forum: About the website, the magazine and this forum
- Topic: New trouble uploading images...
- Replies: 19
- Views: 16970
Re: New trouble uploading images...
What format are you trying to upload ?
Happy to try an experiment from here
MichaelG.
Happy to try an experiment from here
MichaelG.
- Thu Dec 14, 2023 8:44 am
- Forum: Specimens, samples and slides
- Topic: Can immersion oil be used to aid in viewing inclusions under an rough crystal surface?
- Replies: 3
- Views: 2485
Re: Can immersion oil be used to aid in viewing inclusions under an rough crystal surface?
No personal experience … but I would think it’s a very sensible idea
MichaelG.
MichaelG.