How do we know how loud Krakatoa was?

A barometer at the Batavia gasworks (100 miles away from Krakatoa) registered the ensuing spike in pressure at over 2.5 inches of mercury. That converts to over 172 decibels of sound pressure, an unimaginably loud noise.

What was the loudest word ever shouted?

quiet!’
‘Quietttt!!! What was the sound? No other than their teacher, who just happens to have the world’s loudest shout. Miss Flanagan entered the record books back in 1994 with a thunderous rendition of ‘quiet!’ The shout clocked up an earth-shattering 121.7 decibels, setting a world record.

How can you make the loudest sound?

When you use more force to pluck the string, you are using more energy. This extra energy causes the string to vibrate more, which helps it move more air particles for a longer time. A string plucked with force has greater amplitude, and greater amplitude makes the sound louder when it reaches your ear.

How loud is the Krakatoa explosion?

Even at three miles away, the sound is loud enough to cause permanent hearing damage. But that’s nothing compared to the Krakatoa sound. The Saturn V sound is ~170 db at 100 meters away while the Krakatoa explosion was that loud 100 miles away!

What is the loudest sound you have ever heard?

The world’s loudest sound. The sound made by the Krakatoa volcanic eruption in 1883 was so loud it ruptured eardrums of people 40 miles away, travelled around the world four times, and was clearly heard 3,000 miles away. Think, for a moment, just how crazy this is.

What was Krakatoa like before the 1883 eruption?

The Volcano at Krakatoa. Before the 1883 eruption, the volcanic mountain reached a height of approximately 2,600 feet above sea level. The slopes of the mountain were covered with green vegetation, and it was a notable landmark to sailors passing through the straits.

How many times did the Krakatoa waves circle the globe?

In all, the pressure waves from Krakatoa circled the globe three to four times in each direction. (Each city felt up to seven pressure spikes because they experienced shock waves traveling in opposite directions from the volcano.)