this post was submitted on 25 Jan 2026
23 points (92.6% liked)
Explain Like I'm Five
20058 readers
1 users here now
Simplifying Complexity, One Answer at a Time!
Rules
- Be respectful and inclusive.
- No harassment, hate speech, or trolling.
- Engage in constructive discussions.
- Share relevant content.
- Follow guidelines and moderators' instructions.
- Use appropriate language and tone.
- Report violations.
- Foster a continuous learning environment.
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Both eye glasses and magnifying glasses can be used to start a fire but both also take a bit to do so and have to be held in the exact right angle.
Right angle and focal distance. Eyeglasses sit such that the focal point concentrated enough to start a fire is a focal point further away than the back of your retina. But it can still cause permanent sunburn/vision loss.