Name: 3位科学家学校平地人的证据（3 scientists school flat Earthers on the evidence | Neil deGrasse Tyson, Bill Nye, Michelle Thaller）
Uploaded: 2021-05-13T12:51:43.000Z
Duration: 10 min 24 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

MICHELLE THALLER: That's a hard thing for me to even start talking about because there

are so many proofs that the earth is round it's difficult to know where to start.

NEIL DEGRASSE TYSON: B.o.B., the rapper, I have a video letter to him the transcript

of which is in ""Letters From An Astrophysicist.""

That rose to that level of attention because he started saying 'I'm using laws of math

You're going to say using math and physics?

That is an alarm to the Geekoverse that we must rise up and counteract these forces from

THALLER: There are proofs all around you.

It is not difficult to know that the earth is round.

So let's start from the simple to the slightly more complicated.

One of the things you can see yourself with a pair of binoculars is if you actually go

out to a lake and there are boats on that lake the farther away a boat is, the more

the bottom of the boat will disappear and you'll basically just see the mast of the

And as a boat goes farther and farther away, the last thing you will see is the very top

of the mast of that boat, and that's because the boat is actually going over the horizon

And that means that as it goes farther and farther away you see less and less of the

bottom of it and more of the top of that.

You can see that with binoculars by an ocean, by a lake.

That wouldn't happen if the earth were flat.

You would simply see the boat getting smaller and smaller and smaller as it went farther

away, but you'd be able to see the whole thing with the same proportions.

Go to a seashore and figure out if you live on the East Coast figure out why you can't

see Spain from the East Coast of North America.

Just go to the middle of the Mississippi River and look south.

Or the climb a tower or go to the top of a hill or a mountain and you'll see a little

farther, but you will not see to the other side of the earth, places we know to exist.

I've been to Vancouver, British Columbia and you cannot see Vancouver, British Columbia

from Boise, Idaho let alone from New York City or Toronto or what have you.

THALLER: Then there's some other proofs that are a little more obscure but they're actually

really lovely and one is to observe What happens during a lunar eclipse.

Now a lunar eclipse happens when the earth casts a shadow on the moon.

In fact if you've seen one you could actually see the earth's shadow go across the moon.

And when the moon is entirely in the earth's shadow the moon looks like of dark and even

What's happening in that case is that the sun is on one side of the earth.

The earth is in the middle and it's casting a shadow.

The earth is casting a shadow on the moon.

And as the shadow moves across the moon you'll notice that the shadow is curved, it's round.

So something like the Sun that's bigger than the earth and is able to cast a shadow of

the earth on the moon can actually show you the shape of the earth.

Aha, you might say, but could the earth be a disk?

Could it be flat but it's actually still shaped like a disc, not like a sphere.

There was a Greek scientist called Aristarchus and what he noticed was that you can get a

lunar eclipse at many different angles where the sun is.

Sometimes the shadow goes straight across the moon.

Sometimes it just kind of glances the moon just a little bit is in shadow just on the

From every different vantage point, every different angle that the sun is casting a

shadow you always get a perfectly curved shadow.

The only shape that can cast a shadow that's curved from any direction you put the light

So people have known that the earth is spherical for thousands of years.

NYE: Look at pictures from space where you see the earth as a sphere.

Those pictures are not faked and I'll tell you just if nothing else here's why you can

Just to create the paperwork that NASA had created, NASA in this one case.

Just the paperwork to send anything out in space.

To send people into orbit or to send them to the moon, that amount of paperwork would

No one could afford to generate that much documentation.

Then the other thing if you want to get into this, if your friends are really serious,

have them get on a boat or a ship and go out at sea and you'll notice you can't see infinitely

Furthermore if you get into it enough pick up a book about navigation or go online and

A very, very important thing you have to take into account when you try to navigate the

ocean from a ship or a boat is how high you are off the sea surface.

The higher you are off the sea surface, the farther you can see, the farther away the

THALLER: I actually said this to somebody and I couldn't believe they'd never thought

of it, but with binoculars you can see planets.

The sun, the moon, everything else you see in the solar system is a sphere.

So we're the one thing that is different?

And that actually made somebody who was more interested in actually hearing information,

that got them to think like you're right.

Everything else we take a picture of is a sphere.

字幕列表影片播放

3位科学家学校平地人的证据（3 scientists school flat Earthers on the evidence | Neil deGrasse Tyson, Bill Nye, Michelle Thaller）

figure

debate

slightly

audience