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Keeling Lab
Registrace 21. 07. 2017
Remote teaching demo: Make your own Leeuwenhoek microscope for online classes during covid.
This is a demo we normally do live in a second year lab, but it has also worked with high school students. During covid, our lab was online, and I figured I would try this on zoom during class, and it worked pretty well. It's a nice way to breakup a long online class and the students seem to like it. So if you are teaching anything microbiology related and want a little break, this is cheap (free really), pretty easy, and the students like it.
zhlédnutí: 7 609
Video
New species named after Rush: long-haired rockers from the hindgut of termites
zhlédnutí 11KPřed 6 lety
New species named after Rush! Pseudotrichonympha leei, Pseudotrichonympha lifesoni, and Pseudotrichonympha pearti are parabasalian protists from the hindgut of termites. These giant cells caught our eye because they are covered in a luxurious coat of particularly long hairs, or flagella, reminiscent of the long-haired publicity shot of the power trio on the back cover of 2112. Added to that, th...
Using a drone (UAV) to survey a bay in Curacao for marine research collections.
zhlédnutí 364Před 6 lety
Keeling lab members and our collaborator Ben Larsen from Berkeley used a waterproof drone (a Mariner 2, or SplashDrone 2) to survey a bay for algal collection. With the drone and FPV goggles, we could identify algal beds from the air, then land on the water and submerge the camera to see and identify which genera of algae were there. This allowed us to survey a large bay with poor underwater vi...
Make a paper Leeuwenhoek microscope - complete instructions
zhlédnutí 50KPřed 6 lety
Antonie van Leeuwenhoek first discovered microbial life in the 1600s using a simple, single lens microscope that he made himself. This video gives instructions to build your own working Leeuwenhoek microscope, including the actual lens itself, using simple materials you likely have around the house. This exercise is great for teaching and teachers. Additional instructions and downstream activit...
Polynucleobacter symbionts in the ciliate Euplotes
zhlédnutí 506Před 7 lety
We recently published a paper (Boscaro et al. Nat. Ecol. Evol Aug. 2017) describing the genomes of several strains of Polynucleobacter symbionts that live inside the ciliate Euplotes. The genomes help us understand what happens to free-living cells when they become endosymbionts. This video shows how Euplotes and Polynucleobacter look under a microscope.
thanks dude
What is the diameter of the lense?
It's amazing how much magnification they're able to achieve back then.
How much magnification?
Excuse me, Sir.. can I zoom at 400x with your leeuwenhoek microscope?
Parallel World Pharmacy anime has this and I got excited to build it
What did you use for glass?
What's its magnification power?
Can I see the link
1:18
Never looking at paper and glass the same way again Edit: is this comment weird??!?!??
I tried this and it works !
Interesting that the bacteria don't evolve with their host, instead making the whole worse.
What changes when the glass bead is made bigger or smaller?
What changes when the glass bead is made bigger or smaller?
the smaller the bead the higher the magnification
how much is the resolution this microscope can get? by the way this is the most awesome thing i've seem in a while!! thank you so much for sharing it!!
I feel like the phrase "O Ye of Little Faith!" fits me here, I like how this is simple and still used, but I admit that I'm having a hard time believing that it would actually allow you to see bacteria. I mean, I'm sure that you can't see all types of microorganisms, but I'm curious. I'll have to try this out and I do believe you! Its just personal curiosity, but for example would you be able to examine a sample of blood with it? And what about using a glass stir rod instead? The end result might be a bit bigger, but I'd imagine it would still work right? Thank you for posting and making this video!
if i remember correctly from high school, the reason a van leuuwenhoek microscope has such high magnification is because the curve of the lens is so sharp from how small a sphere it is, and the process shown here would make a *very* small sphere i think (except compared to things on the scale of what you look at with it)
This is amazing!! I will try that myself
saw this in a funny anime
thank you very much!
what did u have on the Tem grid?
I have everything but not the paper… thanks:)
Someone please listen - You just discovered the way we can change the world. With two pieces of paper and a glass sphere, mounted to your cell phone we can turn healthcare on its head, with every patient empowered to sample and deliver viable data real time! Do you realize what you've done? You have saved mankind. To wit, using your demonstrated tech, every person on Earth who has access to a camera phone can image blood and tissue samples realtime for a realtime remote diagnosis. I'm nobody who knows even less but I know what I know. I know that anyone can replicate this tech and apply it. No more high risk onsite collection, no more 'hurry up and wait' for samples to transit, subjected to analysis, etc. Please God, let them see.
This...is amazing!!
Speak slowly 😠
Wow this was so cool 👀
I was reading this article about neutron imaging and analysing those microscopes. I didn't really understand how they work or where the rest of the microscope is until I saw your great video! So genial and simple. www.spektrum.de/news/mikroskopie-pionier-die-geheimen-tricks-des-antoni-van-leeuwenhoek/1883926
Excelente
WOW! Really man, thanks, this is exactly what I needed to watch <3
For people that don’t have access to glass tubing and a blowtorch, could they use fishing line and a lighter to make the sphere?
Thanks for this video
I'm curious if the flame is sufficiently hot to melt the standard borosilicate capillary tubes? In other words, that wasn't soft flint glass that you were using?
2:12 bloody hell even the man's stapler is sophisticated lol
Now I’m wondering where I can get a stapler like that
Looking at a TEM grid with a paper microscope - this is neat!
Thank you so much for this!
Thank you!
Very interesting! I should've become a science teacher.
what is that glass like in the sticky tack?
Thank´s for you video is very interesting.
Please help me any one of us please please 🙏🙏
My dear subscribers and scientists I am Vignesh I want to make a microscope so I am begging at your feet can u tell me what is the glass tube used by this bro can u also tell me where can I get these tubes cheap under 500 rupees or any medical s or pharmacy
Thank you a lot!
This was wonderful! Thank you!
I dont mean to be so off topic but does any of you know of a trick to log back into an instagram account?? I was stupid lost my login password. I would love any assistance you can give me.
@Brodie Harley instablaster :)
@Boden Thatcher Thanks so much for your reply. I got to the site thru google and I'm in the hacking process atm. Looks like it's gonna take quite some time so I will get back to you later with my results.
@Boden Thatcher It did the trick and I now got access to my account again. I am so happy:D Thank you so much, you saved my ass !
@Brodie Harley You are welcome :)
very simple and easy than foldoscope.it is the worlds simpliest microscope.and its focusing mechanism is also very simple and workable
89th sub
That new species is definitely a fan of jamming out to YYZ
nice, i am going to make this into a school project
me too hahaha
57th sub
Thanks for sharing this video. It is nice.
Where do you purchase the brass replica?
why do u need brass one when it is easy and cheap
@@lakshmanbheemagani5782 hmm... Brass one last longer maybe???
It's too simple and genius too be on the market