Blog
About
Contact Us
Email Newsletter

EpiPen Up Close

Written by

in

The needle in an EpiPen is about 15 millimeters long and extremely narrow.

Once injected, the needle releases 0.3 mg of epinephrine (for adults).

Even though the needle moves relatively slowly at 6 m/s, it's visibly blunted after use.

←“Eternal Spring”

“Black Ice”→

More posts

“Frozen Waves”
April 24, 2026
Viscoelastic Vortex Street
April 23, 2026
Understanding Fish and Turbines
April 22, 2026
A Fungus That Freezes Water
April 21, 2026

FYFD

Celebrating the physics of all that flows

Blog
About
Contact Us
Email Newsletter

Twenty Twenty-Five

Designed with WordPress