How Dense is a Feather?
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- Опубликовано: 13 апр 2023
- Feathers are light, but how light are they? There must be a way to find out! Please subscribe to continue learning what makes life AWESOME: BioBush.tv/subscribe
It's very hard to calculate feather density. Feathers are made of keratin with air bubbles inside, and they are often coated in oil.
As we investigate, we can thankfully rely on the amazing people who have already come up with ways to measure feather density. The scientific angle comes from Tamrat Tesfaye and colleagues found a couple of chemicals to submerge feathers and measure their density. And there is also a commercial standard for measuring feather fluffiness that gives us insight into just how light and airy feathers can be. I hope this teaches you something new about feathers!
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Source for chicken feather density (BioBush.tv/featherdensity):
Tesfaye, T., Sithole, B., Ramjugernath, D., & Chunilall, V. (2017). Valorisation of chicken feathers: Characterisation of physical properties and morphological structure. Journal of Cleaner Production, 149, 349-365.
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Thanks for watching! You're awesome!
My alpine sleeping bag weighed 40 % less than synthetic and was rated to - 25 F . The military spent millions trying to duplicate penguin feathers insulation properties , could not do it. Awesome , thanks for the visual demonstration of this.
That's a fun fact; thanks for sharing! The fact that penguins exist at all is a testament to the insulating properties of feathers. They're able to maintain their body temperature in cold regions with just a few layers of specialized feathers. Thanks for watching again this week!
Really interesting discussion of how dense feathers are. Hope you have been doing well I have been so busy these last few months
Thanks, JJ! Doing okay, just busy as well. Your work is a lot more fun! I am just working on a Short about the Nēnē, and Hawaii looks like a pretty great place to be. :)
@@BioBush you need footage?
@@Ecotasia Not for this one, but we should do a "Guess the Bird Call - Hawaii" with your photos/videos. Maybe in the fall.
Well, I've never seen an observant or intellegent feather
Pretty dense! Thanks for watching again this week, Marco!