Stuff of Genius: René Laennec: Stethoscope
3 years ago
159
Nowadays it seems that every doctor has a stethoscope. But who invented this nifty device, and how? Tune in to learn more.
Loading comments...
-
1:21
HowStuffWorks_Science
3 years agoStuff of Genius: Nick Holonyak: LED
370 -
1:38
HowStuffWorks_Science
3 years agoStuff of Genius: Standard Time
441 -
1:24
HowStuffWorks_Science
3 years agoStuff of Genius: Neon Lights
229 -
1:48
HowStuffWorks_Science
3 years agoStuff of Genius: L.L. Zamenhof: Esperanto
3113 -
1:25
HowStuffWorks_Science
3 years agoStuff of Genius: Windshield Wipers
251 -
1:57
HowStuffWorks_Science
3 years agoStuff of Genius: Liquid Paper
232 -
1:38
HowStuffWorks_Science
3 years agoStuff of Genius: Spray Cans
235 -
1:10
HowStuffWorks_Science
3 years agoStuff of Genius: Aspirin
380 -
1:10
HowStuffWorks_Science
3 years agoStuff of Genius: Velcro
306 -
1:38
HowStuffWorks_Science
3 years agoStuff of Genius: Whitcomb Judson: Zipper
48