The more we learn about light energy, the better we are.

我们对光能了解得越多，我们就会越好。

They go through a series of reactions, which transform light energy into chemical energy.

这些电子经过一系列的反应，把光能转化成化能。

They have inherited from those minuscule cyanobacteria, the power to capture light's energy.

它们从微小的古细菌继承了吸收光线能量的能力。

In fact, it takes only eight minutes for light energy from the sun to reach the Earth.

实际上，光能从太阳到达地球仅需8分钟时间。

Their color, which actually ranges from red to purple, comes from pigments like carotenoids, which they use to capture light energy.

它们的颜色，实际上从红色到紫色不等，来自类胡萝卜素等色素，它们用来捕捉光能。

The plant then uses that stored up light energy to change water and chemicals in the air into sugars and oxygen.

然后，植物利用储存的光能将空气中的水和化学物质转化为糖和氧。

In the process, the light energy converts to heat energy.

【convert】在此过程中，光能转换为热能。

The Magic of Light Energy Photosynthesis is essentially the conversion of light energy into chemical energy.

光能的魔力 光合作用本质上是将光能转化为化学能。

They have chloroplasts, that combine carbon dioxide and water, with light energy from the sun, to create oxygen and sugar, a form of chemical energy.

植物细胞有叶绿体，可以结合二氧化碳和水，只要有来自太阳的能量，就可以制造氧和糖，这属于化学能量。

And while plants use that light energy to convert carbon dioxide and water into sugars and oxygen, purple bacteria are a lot more flexible.

虽然植物利用光能将二氧化碳和水转化为糖和氧，紫色细菌要灵活得多。

And the discovery of Planck's law – along with the idea that light energy traveled as discrete packets –

并且发现了普朗克定律，即光作为单独的数据包传播。

But when scientists control the wavelengths being fed, plants are able to absorb every photon – particle of light energy, making them appear black.

但是，当科学家控制射向植物的光的波长时，植物就能吸收每一个光子——光能粒子，使它们看起来是黑色的。

Einstein argued that light energy traveled in packets we now call photons, which would essentially make light behave like a particle.

爱因斯坦认为，光能以我们称之为光子的束状运动，使光表现得像粒子。

There are over 1,100 types of carotenoids, pigments which absorb high energy blue and green light, while leaving behind the lower energy red and yellow light.

有超过 1100 种类胡萝卜素，这是一种吸收高能量的蓝光和绿光，而留下低能量的红、黄光的色素。

And this bit is hard to believe – it takes a hundred thousand years for this light energy to travel from the sun’s core to the sun’s surface.

令人难以置信的一点是这些光能从太阳核心到达太阳表面需要十万年的时间。

To maximize their photosynthetic capabilities, leaves are often flat and wide — which gives them more surface area — and green, which makes them more efficient at harvesting light energy.

为了最大限度地发挥其光合作用能力，叶子通常又平又宽——这使它们的表面积更大——而且是绿色的，这使它们更有效地收集光能。

And hydrogen creates all the sun’s energy. Heat and light energy is created all the time in the sun’s core as a result of gas explosions or nuclear reactions.

太阳所有的能量由氢气产生。在太阳核心处不断发生的可燃气体爆炸和核反应产生了热能和光能。

I believe by banning the energy inefficient light and disposable batteries, the planet would be a better place in both flora and fauna, as well as people will live healthier lives.

我相信，通过禁止使用低效能灯和一次性电池，地球上的动植物将会变得更好，人们也会过上更健康的生活。

Just as the ear's mechanoreceptors or the tongue's chemoreceptors convert sounds and chemicals into action potentials, so too do your eyes' photoreceptors convert light energy into nerve impulses that the brain can understand.

就像耳朵的机械感受器或舌头的化学感受器将声音和化学物质转化为动作电位一样，眼睛的光感受器也将光能转化为大脑可以理解的神经脉冲。

So I think it's the most powerful probably to ever invented, it's like nuclear energy can light up a city or destroy a city, I think we have to be thoughtful about how we use it.

所以我认为这可能是有史以来最强大的发明，就像核能可以照亮一个城市也可以摧毁一个城市，我认为我们必须考虑如何使用它。