MRIs are loud. They’re huge. They’re magnetic. But what are they actually doing? This week, we bring Claire back to help us connect the dots between NMR (yes, organic chem flashbacks) and MRI. How does a technique built on tiny hydrogen protons turn into a 3D image of your brain? How can it tell the difference between tissue and fluid? Why can’t you bring metal anywhere near the machine?

We ask:
• What are your protons doing inside an MRI?
• How does “magnetic resonance” become an image?
• Why does oxygenated blood matter?
• And how did anyone figure this out in the first place?

If you’ve ever had an MRI, or just wondered how we can see inside the body without radiation or surgery, this episode pulls back the curtain.

Listen in and rethink what’s happening inside that giant magnet.

00:00 MRI Episode Kickoff
01:11 Meet Claire Again
02:27 PhD Candidate Explained
03:44 NMR Basics Begin
04:33 Protons And Magnets
06:46 RF Pulse And Signal
11:16 Hydrogen Everywhere
13:35 Reading NMR Peaks
16:02 Matrix And Practice
18:31 Jam Summarizes NMR
20:44 Why MRI Not NMR
22:45 Spin And Isotopes
29:02 MRI Uses Body Water
30:37 Tissue Contrast And T1
33:38 Resolution Limits
34:25 MRI Resolution Limits
35:34 From NMR to Images
36:50 K Space and Gradients
41:30 Voxels and 3D Views
44:05 Contrast and Clinical Uses
49:47 Research Possibilities
51:11 Functional MRI Explained
56:14 MRI Safety and Magnet Strength
58:00 Helium and Heavy Machines
01:02:43 Science Boundaries and Wrap Up

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References from the Episode:

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
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• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
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#079 Rebroadcast

Glass. The more you look at it, the more clear it becomes that it holds some serious mysteries. So what really is glass? Is it a liquid? How is it different from typical solids? Does it flow and ooze over time? Is that why old windows are thicker at the bottom? Let's find out!

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References from this episode

1. https://cen.acs.org/articles/95/i47/s-glass-modern-day-researchers.html
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7245478/
3. https://math.ucr.edu/home/baez/physics/General/Glass/glass.html
4. https://phys.org/news/2016-03-scientists-temperature-glass-liquid.html
5. https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/jace.15092
6. https://cen.acs.org/articles/93/i20/Pyrex-100.html
7. Chemistry by Julia Burdge

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• Amanda Raymond
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• Kyle McCray
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• Vince W
• Julie S.
• Heather Ragusa
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• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
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#231

Why is ice so slippery? Is it because of a layer of water on top, or is it something more complex? Join us as we dive into the chemistry behind icy surfaces, inspired by a curious 5-year-old's question. You'll hear about experimental findings, the special properties of water, and even some amusing snow day memories. Perfect for anyone who's ever wondered why ice makes us slip and slide!

00:00 Experiencing Alaska in Texas
00:24 The Chemistry of Ice and Snow
01:42 Why is Ice Slippery?
03:10 Listener Questions and Ice Skating Chemistry
04:02 Debunking Ice Slipperiness Theories
11:42 Water's Unique Properties
17:43 Pressure and Melting Ice
22:30 Scientific Findings on Ice Slipperiness
24:12 Addressing Common Comments
24:31 The Science of Ice Skating
25:30 New Research on Ice
26:37 Amorphous Solids and Ice
37:09 Practical Implications of Ice Behavior
41:12 Snow Day Memories
49:14 Supporting the Show

Support this podcast on Patreon
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References from the Episode:

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

Check out our website at chemforyourlife.com

Watch our episodes on YouTube

Find us on Instagram, Twitter, and Facebook @ChemForYourLife

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.