Here is a concise summary of the text:
**Title:** The Dangers of Extremely Loud Sounds
**Personal Story:** The author recounts passing out at a rock concert due to extremely loud music, leading to an exploration of the dangers of loud sounds.
**Key Points:**
1. **Loud Concerts:** Deep Purple's 1972 concert reached 117 decibels, causing harm to attendees.
2. **Noise Pollution:** Prolonged exposure to sounds > 50 decibels can reduce lifespan by 10-12 years.
3. **Extreme Sound Examples:**
* Jet plane takeoff: 130 decibels
* Experimental aircraft (XF-84H): 140 decibels
* Saturn V launch vehicle: > 200 decibels
* Soviet Tsar Bomba nuclear test: 224 decibels (instantly lethal)
4. **Natural Phenomenon:** The 1883 Krakatoa volcano eruption reached 310 decibels at its epicenter (instantly lethal).
5. **Theoretical Limit:** 1,100 decibels would create a shock wave forming a black hole (purely theoretical, as it's impossible to achieve on Earth).
**Overall Theme:** Extremely loud sounds, both man-made and natural, can have devastating effects on human health and the environment.
Here are the extracted key facts, numbered and in short sentences, without opinions:
**Sound-Related Facts**
1. **117 decibels**: The sound level reached by Deep Purple's concert in London's Rainbow Theater in 1972, setting a Guinness World Record.
2. **100 decibels**: The sound level above which damage to eardrums is possible with short-term exposure.
3. **130 decibels**: The sound level of a tank shot or a jet plane taking off.
4. **140 decibels**: The sound level of the experimental Republic XF-84H aircraft, causing nausea, headaches, and convulsions.
5. **200 decibels**: The sound level created by the Saturn V launch vehicle during liftoff.
6. **224 decibels**: The sound level of the Soviet Tsar Bomba, the largest energy charge in history.
7. **172 decibels**: The sound level recorded 100 miles from the Krakatoa volcano eruption in 1883.
8. **310 decibels**: The estimated sound intensity at the epicenter of the Krakatoa volcano eruption.
**Event-Related Facts**
9. **1972**: The year Deep Purple set the Guinness World Record for the loudest concert in London's Rainbow Theater.
10. **1883**: The year the Krakatoa volcano erupted, creating a massive sound wave.
**Scientific Facts**
11. **Noise Pollution**: Reduces a person's life by an average of 10 to 12 years, 36% higher than the harm caused by smoking tobacco. (According to researchers)
12. **Decibel Scale**: Is logarithmic, not linear, meaning a 10-decibel increase multiplies the volume by 10, not doubles it.
13. **Hawking Radiation**: Would cause man-made black holes to evaporate, according to most scientists.