Where do rainbows come from? (And our new website!)

We just completed a redesign of our website. And front and center is our new interactive lesson on where rainbows come from (a small sampling of what our future content will look like!).



Everyone wonders at some point where rainbows come from. MIT Professor Walter Lewin offers an outstanding lecture on the subject, but if you're not an MIT Physics major, it can be really hard to follow along. For challenging topics like this one, the content should be personalized: Don't know trigonometry? No problem, here's the explanation for you. Oh, so you already know about optics? Well, here's your tailored lesson.

We've built this kind of personalized experience for rainbows. And on top of that, we've included lots of the interactive elements we're becoming known for. Here's one of our favorites, where you can keep track of how red light bounces around water droplets:


The lesson is full of minigames on how light moves and bends, and how it scatters in water. Even if you've never learned any trigonometry or physics, you'll be able to walk away with an appreciation of where rainbows come from, and you'll probably learn a bunch of cool new facts about rainbows you never noticed before. And over the next few weeks, we'll continue to make additional improvements to the lesson. After all, there's nothing else quite like it out there.

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