Today I Found Out
Chalk Isn't Chalk and Why an Elephant's Nose is Called a Trunk (2019x250)
Yayınlanma tarihi: Eyl 18, 2019
Check out the BrainFood podcast: https://itune“”)
If you happen to like our videos and have a few bucks to spare to support our efforts, check out our Patreon page where we've got a variety of perks for our Patrons, including Simon's voice on your GPS and the ever requested Simon Whistler whistling package: https://www.patreon.com/TodayIFoundOut
→Some of our favorites: https://www.youtube.com/playlist?list=PLR0XuDegDqP10d4vrztQ0fVzNnTiQBEAA
→Subscribe for new videos every day!
https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1
Follow Simon on social media:
https://twitter.com/SimonWhistler
https://www.instagram.com/simonwhistler/
Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week!
More from TodayIFoundOut:
When Did People Start Turning Things Up to 11?
https://youtu.be/Tc9mun4RJNg
The Bizarre Story of the Man Who Sold the Moon
https://youtu.be/GhRe_x2wByM
In this video:
Ubiquitous in many classrooms since the 19th century, chalk and chalkboards are familiar to most of us. White, powdery and prone to sticking to those surfaces where it is put (and just as easy to wipe away), chalk and its accompanying board are excellent instructional aids. Notably, however, most chalk today isn’t technically chalk at all, but gypsum.
Want the text version?: http://www.todayifoundout.com/index.php/2015/05/blackboard-chalk-isnt-chalk/
Sources:
http://www.realclearscience.com/blog/2013/10/the-most-amazing-appendage-in-the-world.html
http://www.buzzfeed.com/danieldalton/elephant-facts#.coGZP3y9l
http://animals.nationalgeographic.com/animals/mammals/african-elephant/
http://althouse.blogspot.com/2013/05/trunk.html
http://takeourword.com/TOW123/page2.html
http://www.upali.ch/trunk_en.html
http://www.etymonline.com/index.php?allowed_in_frame=0&search=trunk&searchmode=none
http://en.wiktionary.org/wiki/trunk
https://books.google.com/books?id=fXrlvr_kPXwC&pg=PA36&lpg=PA36&dq=ety
- Prömiyeri: Eki 2013
- Bölümler: 2344
- Takipçiler: 1