A Slice of Pizza Science! - By It's Okay To Be Smart
Transcript
| 00:00 | Oh , mhm way . Find pieces of pizza history | |
| 00:14 | from the Middle East to the Mediterranean . But modern | |
| 00:16 | pizza as we know it was invented here in Italy | |
| 00:19 | . Since then , its popularity has stretched around the | |
| 00:22 | world . Of course , this world isn't round it | |
| 00:27 | all . It's flat . And like every flat map | |
| 00:29 | , it's distorted because the match a spherical surface to | |
| 00:32 | a flat map , you gotta hold it , stretch | |
| 00:35 | it or even worse , 18 27 . Carl Friedrich | |
| 00:40 | Gauss described why using plain old geometry ? And that's | |
| 00:44 | why we fold a piece of pizza to keep it | |
| 00:47 | from drooping . A flat sheet in around surface . | |
| 00:50 | Have different Gaussian curvature . Gas will look a slice | |
| 00:52 | of pizza and say that it has no curvature in | |
| 00:54 | this direction or in this 10 Gaussian curvature . A | |
| 00:59 | neg . Gaussian curvature in both directions . Waken tweak | |
| 01:04 | a surface , but total Gaussian curvature is constant . | |
| 01:06 | Bending are flat sheet of pizza in one direction means | |
| 01:09 | that the other direction becomes more ridge to keep the | |
| 01:12 | Gaussian curvature at a total of zero , just like | |
| 01:15 | we couldn't remove curvature from the grapefruit without stretching her | |
| 01:18 | tearing . We can't add curvature to our pizza without | |
| 01:22 | doing the same that kind of geometry means something . | |
| 01:26 | Sheets could be incredibly strong . Uh , so what | |
| 01:33 | does science say about how much pizza you should order | |
| 01:35 | ? The small , the medium or the large ? | |
| 01:38 | NPR's planet money . Analyze the price per area of | |
| 01:40 | 74,476 pizzas . And when plotted against their size , | |
| 01:44 | the choice is clear . Want the most bang for | |
| 01:47 | your pizza buck ? Always order the larger pizza . | |
| 01:51 | Factoring in pie , the area of the pizza increases | |
| 01:54 | with the square of its radius Z . So while | |
| 01:57 | the larger pieces just 50% wider , it's got 100% | |
| 02:00 | more area than the smaller pizza . You can't see | |
| 02:04 | it , but a microwave cooks your food using light | |
| 02:06 | . It's just that microwave radiation is a longer wavelength | |
| 02:09 | . The infrared that your oven uses . You can | |
| 02:11 | even use a microwave and a pizza to measure the | |
| 02:14 | speed of light . As the oscillating lightwave passes through | |
| 02:18 | food . Partially charged molecules like water rotate with the | |
| 02:22 | passing electric field , creating heat through movement where there's | |
| 02:25 | the most oscillation at the peaks , which would see | |
| 02:27 | the most heating where there's no oscillation at the nodes | |
| 02:30 | . No heating . Here's how to do this at | |
| 02:32 | home . First , take out the rotary tray or | |
| 02:35 | inactivated , then put the pizza in the microwave , | |
| 02:39 | then just turned it on it . Low heat and | |
| 02:42 | let it go . When you see it start to | |
| 02:52 | melt , Measure between the melty spots . Double that | |
| 02:57 | to get the wavelength and multiply it times the frequency | |
| 03:00 | , which is usually on the back or the front | |
| 03:01 | of the microwave . What do we get ? The | |
| 03:04 | speed of light or pretty close ? Not bad . | |
| 03:09 | Of course . You should never cook a pizza in | |
| 03:11 | the microwave . What is wrong with you ? There | |
| 03:14 | you have it . If you want to take a | |
| 03:15 | bigger bite out of the pizza science so we delivered | |
| 03:17 | today . Check out the links down in the description | |
| 03:19 | . Stay curious . Do you want just crossed ? | |
| 03:42 | Different species of bats eat pretty much every kind of | |
| 03:48 | food there is , but the bats that live here | |
| 03:51 | are insect Devore's . A single Mexican free tail bat | |
| 03:54 | only weighs about as much as two quarters , but | |
| 03:56 | all in all , this population will |
Summarizer
DESCRIPTION:
This video highlights the geometry of a pizza and describes what happens when we pit it in the microwave
OVERVIEW:
A Slice of Pizza Science! is a free educational video by It's Okay To Be Smart.It helps students in grades 9,10,11,12.
This page not only allows students and teachers view A Slice of Pizza Science! but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.
GRADES:
9
10
11
12
STANDARDS:
