Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
_xerces_
18 days ago
|
parent
|
context
|
favorite
| on:
A 15-minute intro to involute gears
The idea of shining polarized light through gears made of Lucite to view the stress lines at the point of tooth contact is genius!
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
