#material-science
179 episodes
#5935: How Pressure Actually Bonds VHB Tape
Fifteen pounds of force isn't fifteen psi of pressure. That gap is why your whiteboard might fall off the wall.
#5889: How Pipeline Pigs Actually Work
A bundle of straw that squealed through the pipe gave the industry its weirdest word. Now pigs weigh tons and hunt cracks underground.
#5822: Building Herod's Wall, One Course at a Time
How 300-tonne limestone blocks became a 488-metre retaining wall — without anyone ever lifting them to the top.
#5806: Graphene's Real Story: Lab to Fab at Last
Graphene's properties were never hype — the physics is real. The hard part was always making it at scale. That's finally changing.
#5776: Why UV Epoxy Keeps Curing in the Dark
UV epoxy isn't the same as craft-store UV resin — and its acid-based cure keeps working long after the light goes off.
#5761: Why You Shouldn't Dremel Your Antique Silver
A rotary tool removes metal in seconds that took a century to form. Here's what museums do instead — and why shine isn't the goal.
#5749: From Sand to Trillion-Dollar Chips: Semiconductors in 5 Levels
A bad conductor and a bad insulator — and the most important material in civilization. Semiconductors explained in five escalating levels.
#5741: The Bulb That Lit the 20th Century
From Edison's carbon filament to the blue LED that unlocked white light — how we got from 1 lumen per watt to 150.
#5737: Why Measuring a $4 Spudger Tip Is Weirdly Hard
A listener wants to put a number on his spudger's tip thickness. Turns out that's a real metrology problem.
#5714: The Moon's Junkyard Has a Gift Shop
150 tons of stuff sits on the Moon. Two objects on one square meter tell opposite stories: a $5.50 nylon flag and a silicon disc built for millennia.
#5707: Epoxy vs Superglue: The Tooling Gap Nobody Talks About
Epoxy beats superglue on every measurable axis — so why does everyone still grab the tube? The answer is metering, and the tools that fix it.
#5704: Superglue: One Drop, Two Reactions, Five Mistakes
One part, no mixing, seconds to set — and most of us have been using it wrong since we were nine.
#5679: Glue, Don't Bolt: Anchoring Road Studs and Soil Anchors
Road studs get glued, not bolted — and plows eat anything proud of the pavement. Soil anchors are a different physics problem entirely.
#5674: Sharpen vs Hone: The Right Knife Tool
A whetstone is the pro's choice — but it might be the wrong tool for the knife you actually own.
#5635: Why Your VHB Tape Keeps Falling Off the Wall
VHB tape is a viscoelastic acrylic foam, not glue — and it fails on dirty grout, cold tile, and no roll-down pressure, not on bad tape.
#5633: Is Construction Noise Actually Inevitable?
What if the jackhammer isn't the problem? A look at how deep garages, tall towers, and concrete make cities loud.
#5620: Shatnez: The Commandment With No Known Reason
Wool plus linen equals forbidden — but only sheep's wool, only flax linen, and nobody knows why. Inside the labs that check your suit.
#5610: Magnetizing Screwdrivers: Do the Cycles Wear Out?
Can a screwdriver be magnetized forever, or does the magnetism wear out? A deep dive into magnetizer blocks, coils, and demagnetization.
#5575: Why 1930s Riveters Carried Bigger Pouches Than You Do
A catcher's mitt made of metal, a red-hot rivet you can't look at, and the 90-year-old tool list that never changed.
#5516: Wall Anchors: Why Your Holes Keep Failing
Nylon anchors don't fill gaps — they multiply grip. Here's what actually works when your hole is compromised.
#5490: Why Screen Protectors Bubble Every Time
One dust particle becomes a permanent tent pole under your screen protector. Here's the physics behind the bubbles.
#5360: Ful Medames: Slow Cooker vs Pressure Cooker
Dried fava beans, a slow cooker, and one overnight soak — the idiot-proof path to Egyptian street-style ful medames.
#5333: How Screws Conquered the World
The screw spent 2,000 years as a machine before it held anything together. Here's how it became the hardware aisle we know.
#5325: Selfie Sticks vs Drone Law: The 10-Meter Limit
A camera on a 10-meter pole isn't a drone — legally. But physics, power lines, wind, and police discretion all push back.