I am a collector of useless information. I am sure I have told
you all this once or twice (or three times.) I think it's fun!
I received this email from my friend Sharon. I found the contents
fascinating. I wanted to share it with you. I hope it is new to you.
Wishing everyone a super week! Hugs, Val =)
For Those Who Thought They Knew Everything
* The liquid inside coconuts can be used as
a substitute for blood plasma.
* No piece of paper can be folded in half more
than seven times. (I tried it! LOL)
* Donkeys kill more people annually than plane
crashes and shark attacks. (So watch your back!)
* You burn more calories sleeping than watching television.
* Oak trees do not produce acorns until they are 20
and sometimes up to 50 years of age or older.
* The first product to have a bar code was Wrigley's Gum.
* The King of Hearts is the only king without a mustache.
* American Airlines saved $40,000 in 1987 by eliminating
one olive from each salad served in first-class.
* Venus and Uranus are the only two planets
that rotate clockwise.
* Apples, not caffeine are more efficient at
waking you up in the morning.
* Walt Disney only went to one year of high school.
* Pearls dissolve completely in vinegar.
* It is possible to lead a cow up a flight of stairs...
but not down them.
* Turtles can breathe through their bottoms.
Now you know everything =)
And, apparently, pandas can go down slides...
Thanks for the siggie, Krissy!
Now, wait a minute. Why doesn't a duck's quack echo? That is indeed a mystery. An echo doesn't have to do with the quality of the sound but how the sound returns from the distant place. Do you mean to say that the quack is so absorbed by the air that it doesn't reach a distant place to be returned? My goodness, the poor duck can't even get his quack down the street or around the neighborhood. How will the other ducks hear him? Gulls and geese have a definite advantage over the duck. I think the ducks have a case here. I wonder if they have recourse to some good legal advice. DB
ReplyDeleteLOL at what DB said! Never thought about some of the things he said. About how echoes don't have to do with the quality of the sound but how it returns. Very curious. so why wouldn't it echo then? And WHY, pray tell, would a duck's quack be absorbed any differently than, say, a goose? Dang it all, Val and DB, now you are going to make me have to go look it up, LOL! Curious, inquiring minds (like mine) want to know!
ReplyDeletekrissy knox :)
visit my main blog:
Sometimes I Think
Former AOL Bloggers! Add your blog to our Directory of blogs:
from jland to blogger
follow me on Twitter:
http://twitter.com/iamkrissy;
Back w my results on the duck / quack / echo matter!
ReplyDeleteI hope I'm not being too forward by sharing this info with you! You know me, I just had to go find the answer, LOL. Especially after DB got me to thinking, LOL. So here you go!
First let's start with a very simplified definition of "echo"
echo: the repetition of a sound by reflection of sound waves from a surface
While reading, I found that:
Researchers at Univ of Salford, Greater Manchester, UK recorded a duck quacking in a room w cathedral like acoustics. They found a duck's quack certainly does echo! Just listen to this:
http://tinyurl.com/phy2w3
How then did this myth get started that a duck's quack doesn't echo?
------------------------------------------------
The University of Salford explains it like this:
The quack does echo, but it's usually too quiet to hear. When you want to hear an echo, you usually make a very loud noise to make sure the reflection can be heard. But a duck quacks too quietly, so the reflection is too quiet to hear.
In addition, ducks don't quack near reflecting surfaces. You need a large reflecting surface, a mountain or building for the sound to reflect off. Maybe ducks don't hang around reflecting surfaces.
------------------------------------------------
Okay, here are two more duck quacks to listen to. Maybe this will help you understand further:
Here is a duck in an anechoic chamber. Anechoic chamber is a room designed to prevent any echoes from forming. This particular room is made of wedges of fibreglass that absorbs sounds, instead of reflecting them -- hence no echo. http://tinyurl.com/po7eph
Here is a duck flying past a cliff, quacking, per research done by University of Salford. You can't hear much of an echo, but per the University of Salford, you can hear more than you heard in the anechoic chamber: http://tinyurl.com/r86qqj
And of course, if you clicked the link at the beginning of this comment, you've already heard the echo of a duck in a cathedral like chamber (Reverberation Chamber):
http://tinyurl.com/phy2w3
So, a duck's quack does echo, but in many circumstances will be hard to hear.
And that, my friend, is the rest of the story!
krissy knox :)
visit my main blog:
Sometimes I Think
Former AOL Bloggers! Add your blog to our Directory of blogs:
from jland to blogger
follow me on Twitter:
http://twitter.com/iamkrissy;