Search found 1860 matches
- Mon Nov 13, 2023 6:22 am
- Forum: Microscopes and optics
- Topic: Just bought a set of plan objectives
- Replies: 11
- Views: 2339
Re: Just bought a set of plan objectives
Hi, scarodactyle,...you assume a seller is oblivious to the market said seller pitches items for sale in? So said seller , when offering items for sale 'locally, and over seas'...this seller can be silent on 'trap door fees beyond sellers control'? This is exactly why I am avoiding purchases from sp...
- Mon Nov 13, 2023 5:53 am
- Forum: Microscopes and optics
- Topic: Just bought a set of plan objectives
- Replies: 11
- Views: 2339
Re: Just bought a set of plan objectives
Hi, micropunter and all, I here in con-US dropped out of a fantastic gift clothing deal for my spouse, son, and others...wow, the company is located Shanghai/abroad..lead me to click on purchase prices...then came surprize step of: 'insurance fee', then came 'shipping cost'..!! I dropped off this fe...
- Mon Nov 13, 2023 5:10 am
- Forum: Specimens, samples and slides
- Topic: Water Sample Disposal
- Replies: 6
- Views: 4240
Re: Water Sample Disposal
I agree with many fellow posters: nourish your indoor potted plants with these 'imported area treats', or out doors on your grasses or bushes. I strongly disagree with useing your kitchen sink, or toilet...a matter of keeping your silverware and dishes far from collected outdoor samples...and keepin...
- Wed Nov 08, 2023 2:14 am
- Forum: Microscopes and optics
- Topic: Is a 2x objective worth having?
- Replies: 11
- Views: 5528
Re: Is a 2x objective worth having?
Is it true, Phil Brown, that 'horologist' ( as opposed to : 'clock maker/ clock repair')...is it true that our word for unit of time: ' the hour'..is related to our word: horologist? My dad repaired fine wrist watches in NYC/ 'diamond district'. My thanks to OP for asking about use of a 2X objective...
- Tue Nov 07, 2023 4:34 am
- Forum: Microscopes and optics
- Topic: Is a 2x objective worth having?
- Replies: 11
- Views: 5528
Re: Is a 2x objective worth having?
Hi all, my 'work horse stand' is a Nikon Labophot Pol 'clinical microscope' finite 160 mm stand...circa 1980's??. This stands 1.25 na substage condenser has a turrent of: BF, DF, Ph1, Ph2, Ph3, Ph4 settings. My Nikon Plan 2X works well with both darkfield, and bright field...I do have to 'stand on m...
- Sun Nov 05, 2023 2:12 am
- Forum: Microscopes and optics
- Topic: Is a 2x objective worth having?
- Replies: 11
- Views: 5528
Re: Is a 2x objective having?
Hi, for my wetland and freshwater pondlife...my Plan 2X is excellent for many of the larger plants and animals. Yes, when my targets are protozoa and smaller algae, the 2X objective is a 'scan tool'...but it is essential for larger plants and the colonies organized on these plants...same goes for co...
- Wed Nov 01, 2023 6:01 am
- Forum: Pictures and Videos
- Topic: tree top tardigrades, and a wagon full of water bears
- Replies: 3
- Views: 574
Re: tree top tardigrades, and a wagon full of water bears
I wonder if this ' pigment free', and tiny tardigrade , is a new offspring of the much larger water bear?
Again, happy halloween, thanks for visiting finger-lakes/ U S , for this 'bear hunt'. charlie guevara
Again, happy halloween, thanks for visiting finger-lakes/ U S , for this 'bear hunt'. charlie guevara
- Wed Nov 01, 2023 5:48 am
- Forum: Pictures and Videos
- Topic: tree top tardigrades, and a wagon full of water bears
- Replies: 3
- Views: 574
Re: tree top tardigrades, and a wagon full of water bears
Simple isolation technique for a target organism: elongated water drop on a slide..scan with 4X objective...quick 'slurp' with a pipet of region where a target organism is observed...transfer this sample to a second slide for wet-mount/ coverslip observations. For me, the curious finding of a large ...
- Wed Nov 01, 2023 5:27 am
- Forum: Pictures and Videos
- Topic: tree top tardigrades, and a wagon full of water bears
- Replies: 3
- Views: 574
Re: tree top tardigrades, and a wagon full of water bears
Using bottled spring water, I flooded shavings off tree limb moss coatings. After four hours outdoor ambient temperature , I placed the flooded shavings at my microscopy bench,
- Wed Nov 01, 2023 5:18 am
- Forum: Pictures and Videos
- Topic: tree top tardigrades, and a wagon full of water bears
- Replies: 3
- Views: 574
tree top tardigrades, and a wagon full of water bears
Happy Halloween to all, I have a huge Black Walnut tree in a meadow..the heavy and huge lower limbs make me cringe each time I mow grasses under this assortment of heavy ( and old!) lower limbs. Paying high cost..I had an arborist with a 'cherry-picker' truck, remove these huge limbs. I could not ga...
- Fri Oct 27, 2023 7:15 pm
- Forum: Identification help
- Topic: new to forum, high school biology teacher needs help with ID
- Replies: 5
- Views: 2167
Re: new to forum, high school biology teacher needs help with ID
Hello, mazapata, so nice to sit in on your class and listen to your students. Thank you! It would be wonderful if after showing this video...it would really help if you could include a few paused frames with the organism in the better focus. I do see glimpses of ventral appendages on numerous sectio...
- Mon Oct 23, 2023 9:47 pm
- Forum: Microscopes and optics
- Topic: "How the Great war changed the optics industry"
- Replies: 5
- Views: 1184
Re: "How the Great war changed the optics industry"
Yes, yes, thank you, polymerase. Please all microscopists take a peek at this article! charlie g
- Mon Oct 23, 2023 3:53 am
- Forum: Microscopes and optics
- Topic: "How the Great war changed the optics industry"
- Replies: 5
- Views: 1184
Re: "How the Great war changed the optics industry"
thanks for looking, if you can...could you put a proper link in this thread, scoper?
thank you, charlie g
thank you, charlie g
- Mon Oct 23, 2023 3:27 am
- Forum: Beginner's corner
- Topic: ChatGPT can be your best friend
- Replies: 8
- Views: 2131
Re: ChatGPT can be your best friend
Hi all, again (no way is this a highjack of OP thread)...AI/chatGPT is nothing to be to touted as 'our best friend'. I sincerely mean this. Last month, across the road from our semi-rural land...a car ( it had to be medical crisis , or intoxicated driver) smacked into a utility-pole...and shattered ...
- Sun Oct 22, 2023 11:38 pm
- Forum: Beginner's corner
- Topic: ChatGPT can be your best friend
- Replies: 8
- Views: 2131
Re: ChatGPT can be your best friend
Within the OP thread context, AI/chatGPT...is not a best friend. I was using my less than a week ago experience with eBay's new AI setup to demonstrate problems with AI 'responses' on eBay. Opening my post here I noted chatGPT is far from a source of vetted science...and AI is the overarching driver...
- Sun Oct 22, 2023 10:16 pm
- Forum: Microscopes and optics
- Topic: "How the Great war changed the optics industry"
- Replies: 5
- Views: 1184
"How the Great war changed the optics industry"
Hi, all, I enjoyed a terrific article in January 2016 : "Optics&Photonics News" Really great account of developments in military optical grades of glass..just as WWI started. An actual: ' scramble for optical quality glass'. Similar in many ways to 'scramble in US, for a covid-19 vaccine'. best of l...
- Sun Oct 22, 2023 9:55 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom from Oamaru
- Replies: 33
- Views: 34113
Re: Fossil diatom from Oamaru
Wonderful microscopy, hkv, again..bravo and thanks. Two silly questions for you: 1) the depth of field for your SEM instrument can crisply capture the entire height and depth of a diatom frustle...never a concept of'image stacking with SEM at this magnification? 2) does your SEM setup have a nuisanc...
- Sun Oct 22, 2023 8:16 pm
- Forum: Beginner's corner
- Topic: ChatGPT can be your best friend
- Replies: 8
- Views: 2131
Re: ChatGPT can be your best friend
I apologize, micropunter. Citing family of our terrific forum founder..'hooked my child'. 'Who are you?!' was a reaction to you dropping family members of Olivers in a thread with no context at all to said family member's mention . I sense it was in poor taste...go figure. So, yes...'who are you to ...
- Sun Oct 22, 2023 5:46 pm
- Forum: Pictures and Videos
- Topic: Fossil diatom from Oamaru
- Replies: 33
- Views: 34113
Re: Fossil diatom from Oamaru
Beautiful work, thank hkv.
Any idea how old this sample is ( aprox age)?
Your image captures are quite elegant. charlie g
Any idea how old this sample is ( aprox age)?
Your image captures are quite elegant. charlie g
- Sun Oct 22, 2023 12:33 am
- Forum: Beginner's corner
- Topic: ChatGPT can be your best friend
- Replies: 8
- Views: 2131
Re: ChatGPT can be your best friend
Hi, micropunter,...chatGPT puts so much distance from actual 'vetted research' on oh so many areas of current science findings/ factual reality truths...why be so complacent as to partner with an 'AI' source for your growth in being alive and a participant in all of our reality? Perhaps it best for ...
- Sat Oct 21, 2023 11:45 pm
- Forum: Pictures and Videos
- Topic: Crude media/ undefined media for protozoa culture, we all can enjoy!
- Replies: 6
- Views: 973
Re: Crude media/ undefined media for protozoa culture, we all can enjoy!
Hi, Denis, thanks for visiting my post. Yup, good doggie and I often partner on open space, microscopy collection hikes. When we resided in Ridgewood/Bergen county, NJ....most of our microscopy collection hikes were north of us in: NJ highlands/ and NY Hariman, NY state park. I miss all the great fo...
- Sat Oct 21, 2023 11:33 pm
- Forum: Pictures and Videos
- Topic: Crude media/ undefined media for protozoa culture, we all can enjoy!
- Replies: 6
- Views: 973
Re: Crude media/ undefined media for protozoa culture, we all can enjoy!
Hi, Denis, thanks for visiting my post. Yup, good doggie and I often partner on open space, microscopy collection hikes. When we resided in Ridgewood/Bergen county, NJ....most of our microscopy collection hikes were north of us in: NJ highlands/ and NY Hariman, NY state park. I miss all the great fo...
- Sat Oct 21, 2023 7:01 pm
- Forum: Pictures and Videos
- Topic: Crude media/ undefined media for protozoa culture, we all can enjoy!
- Replies: 6
- Views: 973
Re: Crude media/ undefined media for protozoa culture, we all can enjoy!
I note that the cicada emerged from the soils perhaps in August, so that cicada shell sat through many rains, many days of sunshine, before I collected it 9/24/23. Consider making crude/undefined ( but from same insect source each time) media to enjoy microscopy with. charlie guevara, finger lakes/US
- Sat Oct 21, 2023 6:52 pm
- Forum: Pictures and Videos
- Topic: Crude media/ undefined media for protozoa culture, we all can enjoy!
- Replies: 6
- Views: 973
Re: Crude media/ undefined media for protozoa culture, we all can enjoy!
On 10/24/23 I sampled both cultures..cicada shell plate, and milkweed seed plate. These plates were both given a ten hour light cycle under a sheet of paper toweling. They each displayed a near monoculture of bacteria , each plate a different size of bacteria. The cicada shell ( years underground in...
- Sat Oct 21, 2023 6:34 pm
- Forum: Pictures and Videos
- Topic: Crude media/ undefined media for protozoa culture, we all can enjoy!
- Replies: 6
- Views: 973
Re: Crude media/ undefined media for protozoa culture, we all can enjoy!
I also collected milkweed seed ( still fluffing out of an exploded milkweed pod), to see if a few seeds would germinate in my crude culture media.
The milkweed seed plate grew no evident protozoa, but an enriched near monoculture of a specific bacteria.
The milkweed seed plate grew no evident protozoa, but an enriched near monoculture of a specific bacteria.
- Sat Oct 21, 2023 2:56 am
- Forum: Pictures and Videos
- Topic: Crude media/ undefined media for protozoa culture, we all can enjoy!
- Replies: 6
- Views: 973
Crude media/ undefined media for protozoa culture, we all can enjoy!
Hi, all, please enjoy my microscopy activity ( from time to time) of compounding crude/ undefined media for use with protozoa, or algae species. Anyone whom gardens often notes: 'companion plants bolster growth of desired plants'...something about interactions of neighbor organisms ...helps a desire...
- Mon Oct 16, 2023 9:37 pm
- Forum: Beginner's corner
- Topic: Equipment for the microscopy hobby
- Replies: 11
- Views: 3826
Re: Equipment for the microscopy hobby
Hello, scoper, buried in this forums archived threads is a wonderful and very specific thread on: 'bench setups'..I got as far back as 8/1/17 thread "My microscope set up", by Moose. In PM's, moose explained to me that he was using microscopy of large mammal dung to follow specific plant diets...by ...
- Mon Oct 16, 2023 12:58 am
- Forum: Microscopes and optics
- Topic: On holiday at at St.Lawrence River, microscope info requested
- Replies: 14
- Views: 2987
Re: On holiday at at St.Lawrence River, microscope info requested
Hi, and thanks, apo, for your historical insights. My sense is that by the time 'infinity optics for microscopes' was offered...these graceful and organic round shaped stands...with so, so similar substage 'poultry drum-stick illuminators '..were all long on market..or failures ( Zeiss Opton) in the...
- Fri Oct 06, 2023 5:39 pm
- Forum: Miscellaneous
- Topic: Server Errors
- Replies: 6
- Views: 1409
Re: Server Errors
I'm getting these too, for a week at least. This very forum visit I have had two( 2) 'serving errors'..I go back, then go forward again..this clears up that interuption. charlie g
- Fri Oct 06, 2023 2:06 am
- Forum: Microscopes and optics
- Topic: On holiday at at St.Lawrence River, microscope info requested
- Replies: 14
- Views: 2987
Re: On holiday at at St.Lawrence River, microscope info requested
Immediate end of WWII, a group of Zeiss master microscope developers fled to' free world'...rather than be as a group transported to 'east Germany...or further away from 'the west'. Their master piece microscope: " Zeiss Opton W"..did not gain market traction due it's higher cost than ( some might s...