Why do mirrors reverse left and right?
Show answer & explanation
Answer: Mirrors reflect front to back
Your brain interprets it that way — Wrong. While your brain does interpret the reflection, mirrors actually reverse front to back, not left to right. You perceive it as left-right because you imagine yourself turned around.
Mirrors reflect front to back ✓ — Correct! Mirrors don't reverse left-right - they reverse front to back! When you face a mirror, your front becomes the mirror's back. If you raise your right hand, the person in the mirror also raises their right hand (from their perspective). We think it's reversed because we imagine turning around to face the same direction as our reflection.
Glass bends light sideways — Wrong. Glass doesn't bend light sideways in a flat mirror. Mirrors reflect light at equal angles. The reversal is front-to-back, not left-right or due to bending.
More Physics in Daily Life questions
- In a warm office that already reads 26 C, which change can make people feel cooler without lowering the thermostat?
- Why might 26 C feel acceptable in a breezy naturally ventilated summer building but too warm in a sealed winter office?
- On a warm humid day, why can the same 27 C room feel much worse once you start sweating?
- Why can moving air make a 27 C room feel cooler without changing the thermometer?
- Which hidden factor can make a desk beside a cold window feel chilly even when the thermostat across the room still reads 22 C?
- In the same 22 C room, why might someone who just climbed stairs feel warm while someone sitting in a T-shirt feels chilly?