How We See What We Can't See (Microscopes): Crash Course Biology #22

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Published 2023-12-05

There’s an immense world of tiny stuff within us and around us—but how do we know about it? In this episode of Crash Course Biology, we’ll discover how we see what we can’t see, thanks to the help of centuries-old tools and more recent technology. Along the way, we’ll learn about the major types of microscopes and how to use a typical light microscope.

Chapters:
Discovering Bacteria 0:00
Methods for Observing Molecules 1:36
Microscopy 2:25
Types of Microscopes 3:30
Cryo-Electron Microscopy 7:54
How Light Microscopes Work 8:38
Review & Credits 11:34

This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit BioInteractive.org/CrashCourse for more information.

Check out our Biology playlist here: • Biology

Watch this series in Spanish on our Crash Course en Español channel here: • Crash Course Biología

Sources: docs.google.com/document/d/1GLDtAXE6ekg4Chk2qN3TYb…

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All Comments (11)

@dkaloger5720 4 months ago

Also when using a microscope with 2 lenses you might need to adjust their distance until you see just one circle when looking through them .
@ScareSans 1 month ago

4:40 the coat rack joke was funny enough, but the immediate follow-up with the instant cut to Sammy wearing glasses was so good it actually made me laugh with cereal in my mouth. Very rarely does anything get a "lol" out of me, let alone an educational video. Very well done.
@MonicaEGolak 4 months ago

Thank you for sharing, very interesting!:face-red-heart-shape:
@sham2mar 4 months ago

Shouldn’t you freeze samples for cryo microscopy in LN conditions, so -195 degrees instead of -160 degrees
@thatomofolo452 4 months ago

Yesss 🤔
@AyameFyuu 3 months ago

Got to love how far Microscopes have come to be able to see the TINIEST of things~
@AzizbekMuhammadjonovivo 4 months ago

Very useful video 😊 Assalomu alaykum
@beepboop204 4 months ago

:hand-pink-waving::face-blue-smiling::face-blue-smiling:
@davidandersson422 4 months ago

Suuui
@Slavecutter 4 months ago

Well duh, it uses magnets to pull the image closer there fore appearing bigger.