MacBook Pro sleep light.

One of the first things I noticed about the design of the MacBook Air (yes, I first noticed it on an Air) was the sleep light. What's so special about it? Do you notice anything odd in the top picture?

When I saw the sleep light, I thought, "hmm, there's no window in the aluminium! How does the light shine through?" The Apple site says, "Then there’s the sleep indicator light. An indicator is functional only when it’s indicating something. Look to the right of the thumbscoop. You see nothing. Until you close the display and your MacBook Pro goes to sleep. Then an LED glow appears from inside the enclosure. How? During the CNC process, a machine first thins out the aluminium. Then a laser drill creates small perforations for the LED light to shine through. These holes are so tiny that the aluminium appears seamless when the light is off." So there are tiny, invisible holes! (You can actually see them in the first picture if you look hard)
Why spend so much effort on an indicator light? I think this indicates Apple's dedication in manufacturing. These little things are really cool. The speaker grill was also made by a special process.

The sleep light actually refreshes, although you wouldn't notice in bright conditions. In the dark, when you move your eyes you'll see that it becomes a sequence of dots instead of a line.

This picture was taken at 1/4 sec, so it's possible to calculate how fast the light is refreshing.

Another shot of the light in the dark, stationary this time.