25 Randomly Cool Facts About Sound (You Won’t Believe Your Ears!)

Of our many senses, the ability to hear sound has got to be one of the best. Whether we’re listening to a beautiful arrangement of music or hearing the roar of a car as it speeds by, sound helps us enjoy the beauty of nature and keeps us safe from impending doom. But there’s so much more to sound than our own sense of hearing. For instance, some animals like dolphins use it to get information about the world around them using echolocation. Curious to hear more about sound? Here are 25 Randomly Cool Facts About Sound (You Won’t Believe Your Ears!)

25

The bones of the middle ear - the hammer, anvil, and stirrup - help transform pressure waves into mechanical vibrations.

middle earSource: http://www.physicsclassroom.com/mmedia/waves/edl.cfm
24

Alarm systems transmit sound at around 1 to 3 kHz. That frequency range is both very sensitive for human ears and creates a black spot for our sound location ability.

home alarmSource: http://www.physics.org/featuredetail.asp?id=75
23

Musical sounds are uniform vibrations, while noises are irregular vibrations. Musical sounds distinguish themselves through pitch, loudness, intensity, quality, and timbre.

synthSource: http://www.encyclopedia.com/science-and-technology/physics/physics/sound
22

The speed of sound is about 1,130 feet per second in dry air at 68 degrees Fahrenheit.

machSource: http://www.bluebulbprojects.com/measureofthings/results.php?comp=speed&unit=fts&amt=1130&sort=pr&p=1
21

A healthy young human ear can hear all frequencies from 20 to 20,000 hertz.

EarSource: https://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml


Photo: feature: shutterstock, 25. BruceBlaus. When using this image in external sources it can be cited as: Blausen.com staff (2014). “Medical gallery of Blausen Medical 2014“. WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.010. ISSN 2002-4436., Blausen 0330 EarAnatomy MiddleEar, CC BY 3.0, 24. I, BrokenSphere, Honeywell home alarm, CC BY-SA 3.0, 23. Pixabay.com (Public Domain), 22. Wikipedia Commons.com (Public Domain), 21. David Benbennick, Ear, CC BY-SA 3.0, 20. Wikipedia Commons.com (Public Domain), 19. Wikipedia Commons.com (Public Domain), 18. Zappys Technology Soluti via flickr. CC BY 2.0, 17. MITO SettembreMusica, MITO Orchestra Sinfonica RAI, CC BY 2.0, 16. PublicDomainPictures.net (Public Domain), 15. Wikipedia Commons.com (Public Domain), 14. Wikipedia Commons.com (Public Domain), 13. Gamer112 at en.wikipedia, TDK ST-200, CC BY 3.0, 12. Elelicht, Chichen Itza El Castillo, CC BY-SA 3.0, 11. Todd Ehlers, Zenith Space Command, CC BY-SA 2.0, 10. Deutsch: Ute Kraus, Physikdidaktik Ute Kraus, Universität Hildesheim, Tempolimit Lichtgeschwindigkeit, (Milchstraßenpanorama im Hintergrund: Axel Mellinger) English: Ute Kraus, Physics education group Kraus, Universität Hildesheim, Space Time Travel, (background image of the milky way: Axel Mellinger), Black Hole Milkyway, CC BY-SA 2.5, 9. MaxPixel.com (Public Domain), 8. Pexels.com (Public Domain), 7. Ludovic Hirlimann, Electric car charging Amsterdam, CC BY-SA 2.0, 6. Pixabay.com (Public Domain), 5. WIkipedia Commons.com (Public Domain), 4. Anker A, Grave S, Alpheus cedrici holotype, dorsal view – ZooKeys-183-001-g003A, CC BY 3.0, 3. Pixabay.com (Public Domain), 2. Wikipedia Commons.com (Public Domain), 1. Pixabay.com (Public Domain)

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