Does light travel in all directions?

光是向每个方向传播的吗？

youdao

This bag foreran the duffel bag for light travel to keep necessities in.

放在行李包前的包是用来放必需品的。

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Could wormholes hold the secret to faster-than-light travel?

虫洞是否包含了超光速旅途的奥秘？

youdao

The blue light is the product of a long travel path through the snow or ice.

VOA: special.2010.01.05

c We know it's very specific for light because in this equation is c, the speed of light. So any time you go to use this equation, if you're trying to use it for an electron, just ask yourself first, does an electron travel at the speed of light?

我们知道它只对光适用是因为在这个方程里有,光速，所以下次你们用这个方程前，如果你们要把它用到一个电子上，先问问你自己，电子的运动速度是光速吗？

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Just as you can write a great sci-fi TV series by entirely ignoring all of the physics of faster than light travel.

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Everything takes a good hit here, from the absurdity of common sci-fi tropes like faster than light travel, ninjas, travel agents and tourists.

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To make the light travel enormous distances, thousands of volts of electricity are sent through the cable's copper sleeve to power repeaters, each the size and roughly the shape of a bluefin tuna.

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