“Sound is mechanical,” writer Maggie Koerth-Baker notes, in response to a child’s query about the loudest sound in the world. “A sound is a shove — just a little one, a tap on the tightly stretched membrane of your ear drum. The louder the sound, the heavier the knock.”
The little girl, Kara Jo, wanted to hear the loudest sound in the world — but Koerth-Baker gave a pretty good example as to why not.
Sound, it turns out, can be very destructive at high decibels. It can even kill you.
In 1883, ranchers in Australia, heard what sounded to them like two rifle shots. What they actually heard came from 2,233 miles away. It was the sound of the Indonesian island of Krakatoa blowing up in a volcanic eruption. It may be the loudest sound on human record. Recorded spikes in atmospheric pressure indicate that waves from the sound circled the globe three times.
“Snap your fingers and you jostle the particles right next to you,” Koerth-Baker explains. “As they wiggle, they bump into the particles next to them, which, in turn, nudge the particles next to them. These wiggles are what the world’s barometers were measuring in the wake of the Krakatoa eruption.”
Sound, she pointed out is particle movement, which is why you can’t hear anything in a vacuum, like space.
The loudest animal is a sperm whale, which uses echolocation to navigate. The “clicks” made by sperm whales to detect what’s around them with echoes are 200 decibels. By comparison, the loudest sound recorded by NASA was the first stage of the Saturn V rocket — at 204 decibels. Both sounds are loud enough to rupture your eardrums.
Watch observers react to a sound wave from the Tavurvur volcano in Papua New Guinea in 2014. Note: Keep your volume low.
GOP senator blows off new evidence against Trump — days after whining that there was no new evidence
An explosive report from ABC News on Friday morning detailed an audio recording purportedly of President Donald Trump demanding the firing of Marie Yovanovitch, in which the president instructs his henchmen to "get rid of her" and "take her out."
Sen. John Barrasso (R-WY), when asked by reporters about this new evidence Friday afternoon, blew it off as not a big deal.
"There will be new evidence every day!" he said in shrugging off the purported recording of the president. "There will be something new that comes out every day!"
McConnell is running a ‘scam’ to keep Bolton from testifying so Trump’s trial can end without any more damage: columnist
According to Greg Sargent at the Washington Post, Senate Majority Leader Mitch McConnell is trying to pull one over on the Democrats in his attempt to make sure former national security adviser John Bolton doesn't speak during the impeachment trial of Donald Trump -- and that Democrats should call his bluff.
Noting a CNN report that states, "A growing number of Republicans are pointing to President Donald Trump's threat to invoke executive privilege in order to make their case against subpoenas sought by Democrats for key witnesses and documents, a development that could bolster Senate Majority Leader Mitch McConnell's goal of a swift end to the impeachment trial," as an excuse to keep Bolton at arms-length from testifying, the Wapo columnist said executive privilege may not be the stop-gap Republicans think it is.
‘Jury tampering’: Internet explodes after WH threatens that senators’ heads ‘will be on a pike’ if they vote to convict
The news was so shocking some thought it was fake. But as CBS News reports, the White House is threatening Republican Senators to not vote to convict President Donald Trump in his impeachment trial, or else.
That "or else" was revealed by CBS News' Chief Congressional Correspondent Nancy Cordes, who reports, "One Trump confidant tells CBS News that GOP senators have been warned: 'Vote against the president and your head will be on a pike.'"
The revelation comes at the 1:17 mark:
In opening statements, House managers examined the debunked conspiracy theories invoked by Pres. Trump.