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Ben Makes Things
Приєднався 23 вер 2020
Fresnel Schlieren Optics: Seeing Heat on the Cheap
0:00 Introduction
0:54 Theory
9:12 Component Selection
22:16 Results
0:54 Theory
9:12 Component Selection
22:16 Results
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Відео
Microbial Dwellers of the Forest Pond
Переглядів 1114 роки тому
A hairy litonotus, a pair of hungry rotifers (lepadella ovalis?) and a crushed arcella at 100x-400x magnification.
The 3D Printed Microscope: Polarizer Box
Переглядів 1524 роки тому
Assembling the 3D printed parts of an "analyzer", i.e. a box containing a rotatable polarizer that can optionally be removed from the optical path. The polarizer sits on a gear that can be moved out of the optical path via a swinging arm. The gear engages with a handwheel near the front which allows the polarizer to be rotated. The arm is held at its endstops via magnets. The box has a dovetail...
The 3D Printed Microscope: Camera Relay Tube
Переглядів 3194 роки тому
Making a 3D printed microscope relay tube with optics for a DSLR. The tube attaches to the trinocular port of a Reichert Microstar IV head, and contains correction and collimating optics to optain an image that can be accepted by a regular camera lens. The tube and camera lens can be secured in place to allow for a low-vibration connection between the DSLR and the microscope.
Hm. I was enthusiastic about this up until the end when you had to subtract off the calibration image. If you have to do that, may as well do BOS (Background Oriented Schlieren) which is much simpler and doesn’t need any mirrors OR fresnel lenses…
Hi. What would the hot focal 9:01 in free air look like through a Schlieren camera? Would the air heat?
What model of 3D Printer do you use to get that kind of precision? Or did this require some post-printing machining?
I like the finish of the parts. Did you think about some damping grease at the right spots in the housing? This would make the "feeling" when turning the wheels much more valent.
Hi, what software did you use to correct for the lens defect on the video?
Wonderful! The multicolored image was about all I thought was available, considering... I was knocked over with your B&W imagery! You are quite clever and sly my friend :) A very engaging talk to boot. The only thing next I have to do is hit that SUB button. Cheers!
Seems very nice! Do you share the stl?
if i have questions about your video how can i get in touch with you? In great need of help!!!
Wow, so much brass! Sorry I don't like: the helicoid at the bottom, holding all weight. the clamping of 50mm lens (on the focus ring??) anyway looks crazy well made, if works, that's all.
Next level!
Mind blown! I bet that works better than the polarizer that was originally designed for this. How is the plastic at supporting the weight of the head? I thought there was a reason this type of part was made from metal, but maybe not!
WOW! Those results are way better than you let on throughout the video, congratulations. I am fairly familiar with the fluid dynamics, and at least passably knowledgeable in the field of optics, but the image processing part is something I have no experience with. If you ever find the time and are willing to I'd love to see a video describing how you did it and possibly other ways of doing it using existing tools, or maybe more accessible languages like python? Once again, congratulations on getting such fine results with (and I mean this as a compliment) such cheap equipment. Too many DIY Schlieren videos start with "step 1: buy a thousand dollar telescope mirror" so I'm glad to see someone figure out how to get almost as good looking results with random industrial surplus components, some cardboard , a digital camera, and some coding, it really makes this stuff accessible.
ben you are our lord and saviour
Yes, also Darwin tips his hat to you...
Nicely done, interested in selling one for a Microstar?
bravo! amazing work. congrats
Good work, thanks