Why You Should Stop Playing Hard to Get, Why You Need Goggles, and Alzheimer’s Diagnosis

Curiosity Weekly

Warner Bros. Discovery

Self-improvement, Science, Astronomy, Education

4.6 • 935 Ratings

🗓️ 16 July 2018

⏱️ 8 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

In this podcast, Cody Gough and Ashley Hamer discuss the following stories from Curiosity.com to help you get smarter and learn something new in just a few minutes:

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Full episode transcript here: https://curiosity-daily-4e53644e.simplecast.com/episodes/why-you-should-stop-playing-hard-to-get-why-you-need-goggles-and-alzheimers-diagnosis

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Transcript

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0:00.0	Hi, we've got three stories from Curiosity.com to help you get smarter in just a few minutes.
0:05.0	I'm Cody Gough.
0:06.0	And I'm Ashley Hamer.
0:07.0	Today you learn why you need goggles to see underwater.
0:09.0	Why science says you shouldn't play hard to get, and how researchers are working on ways to
0:13.3	diagnose Alzheimer's disease would satisfy some curiosity.
0:16.5	Cody do you like swimming? Not really. I just did my very first triathlon last year and
0:20.8	I'm about to do my second. No big deal. No big deal. But when I go to the pool to
0:25.3	work out if I forget my goggles goggles are really important. Even if you're not
0:29.5	swimming laps for a workout it is summertime so we thought we'd explain why you need goggles to see
0:34.4	underwater.
0:35.4	Get ready for a crash course on your eyesight.
0:37.4	Ready?
0:38.4	Your eyes have three main parts.
0:39.9	The cornea and lens bend and focus light to form an image and the retina sends that
0:44.5	image to the brain. We've evolved so that works great on land where the cornea and lens
0:48.7	bend light independently so our brain sees an image but, the cornea is too similar in consistency to water.
0:56.2	That means that there's not enough difference between the two for your light focusing system
1:00.0	to work the way it should. Your lens has to make up for your cornea's focusing power,
1:04.4	so you end up with an image that's kind of there but usually pretty blurry.
1:08.0	Fish can see fine because they only rely on their lens.
1:11.0	But the human lens is curved on both sides and a fish's lens is round
	...

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