2017年4月8日 星期六

How to take a picture of a black hole

TED
This week on TED.com
April 8, 2017

Katie Bouman: How to take a picture of a black hole

12:51 minutes · Filmed Nov 2016 · Posted Apr 2017 · TEDxBeaconStreet

At the heart of the Milky Way, there's a supermassive black hole that feeds off a spinning disk of hot gas, sucking up anything that ventures too close -- even light. We can't see it, but its event horizon casts a shadow, and an image of that shadow could help answer some important questions about the universe. Scientists used to think that making such an image would require a telescope the size of Earth -- until Katie Bouman and a team of astronomers came up with a clever alternative. Learn more about how we can see in the ultimate dark.

Playlist of the week

What’s really floating out in space?

The answer is satellites, stars, planets, asteroids and maybe even aliens. Watch »

7 TED Talks • Total run time 1:07:53

This week's new TED Talks

How can we bridge the gap between left and right to have a wiser, more connected political conversation? Journalist Gretchen Carlson and op-ed columnist David Brooks share insights on the tensions at the heart of American politics today -- and where we can find common ground. Followed by a rousing performance of "America the Beautiful" by Vy Higginsen's Gospel Choir of Harlem. Watch »

Your boss probably isn't paying you what you're worth -- instead, they're paying you what they think you're worth. Take the time to learn how to shape their thinking. Pricing consultant Casey Brown shares helpful stories and learnings that can help you better communicate your value and get paid for your excellence. Watch »

Why does race matter so profoundly for health? David R. Williams developed a scale to measure the impact of discrimination on well-being, going beyond traditional measures like income and education to reveal how factors like implicit bias, residential segregation and negative stereotypes can affect people's health and well-being. Watch »

Giorgia Lupi uses data to tell human stories, adding nuance to numbers. In this charming talk, she shares how we can bring personality to data, visualizing even the mundane details of our daily lives and transforming the abstract and uncountable into something that can be seen, felt and directly reconnected to our lives. Watch »

Read more on ideas.ted.com

Work: Why you should know how much your co-workers get paid »
The surprising benefits of being open about salaries
 
Math: Justice in the age of big data »
More and more, algorithms are being used to fight crime. No problem, right? 

Art: How color helps a movie tell its story »
File under: Things you never noticed, but will now

Community: There are three sides to every argument »
Hard-won insights from a negotiator on how to resolve tough conflicts

Quote of the Week

What do you love about what you do? What excites you about the work that you do? If you connect with that, communicating your value will come naturally."

Casey Brown
Know your worth, and then ask for it
 

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