# lenses lenses

Author Comment Last activity Moderation
farhanbinkhalid50 "Bagpipes are a woodwind instrument using enclosed reeds fed from a constant reservoir of air in the form of a bag. The Scottish Great Highland bagp..." | Read more » over 2 years ago
warren "Wow, great info. Love this! " | Read more » about 4 years ago
michalby "Mineral oil should work. I sometimes use on a professional immersion objectives a mixture of drugstore-bought liquid paraffin (sold as a laxative) ..." | Read more » about 4 years ago
stevie "ohh interesting. I was about to buy the 10x. Any fixes for this? or any troubleshooting success @kgradow1 ? " | Read more » about 4 years ago
richardbowman "@kgradow1 are you using one of the openflexure optics modules? If so, that might explain why the 10x lens didn't work as expected. Finite-conjuga..." | Read more » about 4 years ago
richardbowman "Hey, for the Openflexure Microscope I tend to buy the lenses from Aliexpress, usually Sunlight Optical but there are many suppliers. The mass-prod..." | Read more » about 4 years ago
warren "Awesome, thanks! yes, alcohol is surprising! " | Read more » about 4 years ago
dcanprdn "I do not know, but anything would be an improvement; just apply the oil (a bubble connecting slide through air to lens surface) and check the detai..." | Read more » about 4 years ago
warren "Wow, thanks! So how close is actually helpful? I found a list of household oils and refractive indices and mineral oil is around 1.47-1.48 -- would..." | Read more » about 4 years ago
dcanprdn "Glass apparently has a refractive index of ~ 1.5 while air is 1.0. This means that light velocity is slower in glass. When light from a sample s..." | Read more » about 4 years ago
warren "@partsandcrafts -- is the oil absolutely required? Like, is it possible to skip this if you don't need the extra... awesomeness? @wmacfarl @kgradow..." | Read more » about 4 years ago
warren "Lots of dense info on this here, but I'm not sure for a given lens if you can just add oil or not? https://en.wikipedia.org/wiki/Oil_immersion " | Read more » about 4 years ago
kgradow1 "The cost of all of them actually vary a lot. We took a 40x apart at the barnraising and realized it only has two lenses inside of it, which seemed..." | Read more » over 4 years ago
stevie "hmm maybe we could get 1 or 2 10xes. Any idea why the cost on the 10x ones here vary so much? http://www.amscope.com/accessories/objective.html?i_m..." | Read more » over 4 years ago
kgradow1 "I'd love to work through a build at 4x or 10x, which should a much simpler in terms of onboarding and just learning how to use the scope. At those..." | Read more » over 4 years ago
stevie "ok great! we'll start with the 40x thanks! " | Read more » over 4 years ago
kgradow1 "Do you mean which magnification? Either 40x or 100x are good. I think the 40x is slightly easier to start with, since it's easier to find your m..." | Read more » over 4 years ago
stevie "Hi @kgradow1 wondering which lens you would recommend for a starter kit for imaging some of the PM materials we've been speaking about? " | Read more » over 4 years ago
kgradow1 "40x for $22: http://www.amscope.com/40x-achromatic-microscope-objective.html 100x for$31: http://www.amscope.com/100x-achromatic-microscope-oil-..." | Read more » over 4 years ago
warren "Here's one for $40 -- would it work? https://www.amazon.com/OMAX-Achromatic-Compound-Microscope-Objective/dp/B00FG8BC62/ Here's a 100x one for$25..." | Read more » over 4 years ago
kgradow1 "We haven't tested a wide range of objectives -- that would be a great next step for this project " | Read more » over 4 years ago
kgradow1 "We got ours from Amscope: http://www.amscope.com/4x-100x-four-achromatic-objective-lens-set.html#product_tabs_description_tabbed. 20mm RMS-thread..." | Read more » over 4 years ago
warren "@bmela @kgradow1 @wmacfarl is this already listed in the activities you posted? I just wanted a place to list links and prices and options. Thanks! " | Read more » over 4 years ago