Glow-in-the-Dark Cities, Feeling Holes, Max Volume on Earth
Curiosity Weekly
Warner Bros. Discovery
4.6 • 963 Ratings
🗓️ 2 March 2022
⏱️ 19 minutes
🧾️ Download transcript
Summary
Learn about glow-in-the-dark cities; why holes feel larger with a tongue than a finger; and the maximum volume on Earth.
Maybe we can save the planet by making our cities glow in the dark by Briana Brownell
- Kleiner, K. (2021, November). Will glow-in-the-dark materials someday light our cities? Knowable Magazine | Annual Reviews. https://knowablemagazine.org/article/technology/2021/will-glow-in-the-dark-materials-someday-light-our-cities
- Long Persistent Luminescence: A Road Map Toward Promising Future Developments in Energy and Environmental Science. (2021). Annual Review of Materials Research. https://www.annualreviews.org/doi/10.1146/annurev-matsci-091520-011838
Why holes feel larger with your tongue than with your finger by Grant Currin
- Why Do Holes Feel Larger With Your Tongue Than With Your Finger? (2017, November). Mentalfloss.com. https://www.mentalfloss.com/article/512813/why-do-holes-feel-larger-your-tongue-your-finger
- Seriously Science. (2017, October 18). Scientist finally figures out why holes feel larger with your tongue than with your finger. Discover Magazine; Discover Magazine. https://www.discovermagazine.com/health/scientist-finally-figures-out-why-holes-feel-larger-with-your-tongue-than-with-your-finger#.Wfn2exNSzm1
- Albashaireh, Z. S. M., & Orchardson, R. (1988). Comparison of the human perception of hole size by the tongue and the fingers. Archives of Oral Biology, 33(3), 183–185. https://doi.org/10.1016/0003-9969(88)90043-x
- Wilkins, A. (2010, December 28). Why our tongues and fingers “see” the world differently. Gizmodo; Gizmodo. https://gizmodo.com/why-our-tongues-and-fingers-see-the-world-differently-5719827
- Drewing, K. (2018). The extent of skin bending rather than action possibilities explains why holes feel larger with the tongue than with the finger. Journal of Experimental Psychology: Human Perception and Performance, 44(4), 535–550. https://doi.org/10.1037/xhp0000453
- S2E5: Head Transplants - Taboo Science Podcast. (2021). Tabooscience.show. https://www.tabooscience.show/s2e5-head-transplants/
There's a maximum sound volume on Earth by Cameron Duke
- EarQ. (2021). What Are Decibels (dB)? | Loudness Levels, Safe, Unsafe. Earq.com. https://www.earq.com/hearing-health/decibels
- Hearing loss and deafness: Normal hearing and impaired hearing. (2017, November 30). Nih.gov; Institute for Quality and Efficiency in Health Care (IQWiG). https://www.ncbi.nlm.nih.gov/books/NBK390300/
- Koerth, M. (2016, July 7). The Loudest Sound In The World Would Kill You On The Spot. FiveThirtyEight; FiveThirtyEight. https://fivethirtyeight.com/features/the-loudest-sound-in-the-world-would-kill-you-on-the-spot/
- Kolitz, D. (2019, January 14). What’s the Loudest Sound in the Universe? Gizmodo; Gizmodo. https://gizmodo.com/whats-the-loudest-sound-in-the-universe-1831720066
- Mihai Andrei. (2020, February 4). The loudest sound in mankind’s history. ZME Science; ZME Science. https://www.zmescience.com/science/the-loudest-sound-ever-in-mankinds-history/
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Transcript
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| 0:00.0 | Hi, you're about to get smarter in just a few minutes with Curiosity Daily from Discovery. |
| 0:06.4 | I'm Cody Gough. |
| 0:07.8 | And today you learn about how we could save the planets by making our cities glow in the dark, why holes feel larger with your tongue than with |
| 0:16.0 | your finger, and the maximum sound volume on Earth. |
| 0:20.5 | Let's satisfy some curiosity. Imagine walking around your neighborhood at night, |
| 0:26.0 | but instead of bright street lights, the streets are filled with soft ambient light |
| 0:32.0 | glowing from buildings and sidewalks and roads. |
| 0:35.4 | It might seem like a stretch but a group of scientists is developing a series of new |
| 0:40.7 | materials that could light our cities at night using |
| 0:45.1 | luminescent materials rather than light sources. Now this is not just |
| 0:51.1 | about aesthetics although what look cool it's also good for energy efficiency. |
| 0:56.0 | Lighting is responsible for about 20% of global energy use. |
| 1:01.0 | Reducing that energy usage would go a long way in helping combat climate change. |
| 1:06.0 | The scientists have been studying luminescent materials for over four centuries. |
| 1:12.0 | Instead of emitting heat immediately, these materials trap the energy of photons that hit it and then re-emmit them later as visible light. |
| 1:22.0 | The first luminescent material was created later as visible light. |
| 1:22.8 | The first luminescent material was created in 1603 by Vincenzo Castrolo, when he smelted some stones |
| 1:31.5 | he found on Mount Paderno Italy and found they would glow after being exposed to sunlight. |
| 1:38.0 | And since then, scientists have found lots of other luminescent materials. |
| 1:42.0 | There are 250 that we know of. have found lots of other luminescent materials. |
| 1:42.9 | There are 250 that we know of, |
| 1:45.4 | and most of the materials glow, blue or green, |
... |
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