Strobolens

Strobolens is a stroboscope simulation tool that lets you explore the visual phenomenon of the stroboscopic effect.

Features:
Adjustable flash frequency (1–60 Hz) with precise slider control
Customizable duty cycle to change bright/dark ratio
Rotating disk animation drawn with Canvas to demonstrate the freeze effect
Quick presets for common frequencies
Multiple strobe colors (white, red, green, blue)
Disk direction control (clockwise / counter-clockwise)
Adjustable disk speed (RPM) and segment count
Session history to track your experiments
No camera, no flashlight permission required
When the flash frequency matches the disk rotation frequency, the disk appears to stand still — a classic demonstration of the stroboscopic effect.