Description: A collimator is a device that narrows a beam of particles or waves. It can be used to align beams or filter out unwanted particles.
Type: software
Description: RemNote is a free, open-source spaced repetition and note-taking app. It uses an interconnected web of notes to promote understanding and long-term memory retention. Key features include note linking, spaced repetition flashcards, knowledge graphs to visualize connections, and excellent mobile apps.
Type: software
Pricing: Open Source