What Percentage of the Light Falling on a Piece of Photographic

question 275

Multiple Choice

What percentage of the light falling on a piece of photographic film is typically wasted (does NOT contribute to the formation of the image) ?

• A) 2%
• B) 18%
• C) 45%
• D) 98%

---

Definitions:

Circadian Rhythms

The natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours.

Sleep-Wake Cycles

The natural cycle of sleep and wakefulness in a 24-hour period, regulated by the body's internal clock.

Circadian Rhythm

The inherent biological mechanism that controls the cycle of sleeping and waking, recurring approximately every 24 hours.

Phi Phenomenon

An optical illusion where stationary objects shown in rapid succession, such as flashing lights, appear to be in motion.