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Why You Should Think Twice Before Buying That '10,000 Lumen' Flashlight
SlashGear • • technology
Key Points:
- The modern flashlight was patented in 1899 by David Misell, a British inventor in New York, who created a handheld electric torch powered by three dry-cell batteries and an incandescent bulb.
- Brightness in flashlights is measured in lumens, not wattage; LEDs are far more efficient than incandescent bulbs, providing the same brightness with significantly lower energy consumption and much longer lifespan.
- Extremely bright flashlights (around 10,000 lumens) can only maintain peak brightness for a short time due to battery drain and heat generation, often dropping output drastically within minutes to prevent overheating.
- Achieving sustained ultra-high brightness (50,000 to 100,000 lumens) requires larger, heavier flashlights with extensive battery capacity and active cooling systems, making them impractical for everyday handheld use.
- Typical smartphone flashlights emit only 40-50 lumens, sufficient for emergencies but far less powerful than dedicated flashlights designed for prolonged or intense illumination.
