Why aren’t germicidal ultraviolet lights used everywhere, to prevent the spread of disease?
They use a wavelength of light that is cancer causing. Do you want to sit under a cancer causing light? Plus, they aren't all that effective to stop, say a sneeze from transmitting to another person.
The Short Answer
They use a wavelength of light that is cancer causing. Do you want to sit under a cancer causing light? Plus, they aren't all that effective to stop, say a sneeze from transmitting to another person. It takes some time to kill the germs.
Analysis
Key Concepts: Light, cancer, causing
This explanation focuses on light, cancer, causing and spans 44 words across 4 sentences. At 39% below the average Science explanation (72 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.
What This Answer Covers
The explanation opens with: “They use a wavelength of light that is cancer causing.” It then elaboratesultimately building toward a complete picture across 4 connected points.
How This Compares in Science
Ranked #339 of 500 Science questions by answer depth (top 69%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.
Frequently Asked Questions
Is there a simple explanation for why germicidal ultraviolet lights used everywhere, to prevent the spread of disease?
They use a wavelength of light that is cancer causing. Do you want to sit under a cancer causing light? Plus, they aren't all that effective to stop, say a sneeze from transmitting to another person. It takes some time to kill the germs.
How detailed is this explanation compared to similar Science questions?
This is a focused answer at 44 words, ranked #339 of 500 Science questions by depth. The key concepts covered are light, cancer, causing.
What approach does this answer take to explain germicidal ultraviolet lights used everywhere, to prevent th?
The explanation uses direct explanation across 44 words. It is categorized under Science and addresses the question through 1 analytical lens.