EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Hacker News·Sep 1·5 min read
Fluorescent lamps (don't) have ears
TL;DR
Fluorescent lamps were theorized to eavesdrop on conversations through sound-induced luminosity changes, but practical tests showed no evidence supporting this claim.
✦ Why It Matters
Before relying on unconventional surveillance methods, validate their effectiveness through empirical testing.
Key Takeaways
- Test claims of technology with empirical methods.
- Understand the limitations of sound propagation in low-pressure environments.
- Use high-speed photography for precise measurements in experiments.
- Be skeptical of sensational claims without scientific backing.
How It Works
The theory behind using fluorescent lamps for eavesdropping is based on the idea that sound waves could cause minute changes in luminosity. However, the gas inside the lamp is at a very low pressure, making it a poor medium for sound transmission.