The Tech Bench

Red LSI on a MacBook Unibody

Liquid Submersion Indicators (LSI) are tiny white “stickers” that turn red when they come into contact with liquid.

These ingenious little guys can be found in all late model Mac laptops, iPhones and iPod Touch.

While not always a fan favorite (they are snitches,) they can be very useful in troubleshooting liquid spills as they can help determine the extent of the liquid exposure to the laptop.

The LSIs are located throughout the laptop and cannot be replaced.

You can see one of the LSIs (pictured) under the RAM on a MacBook Unibody that has turned red from a liquid spill.

iTunes U is a great way for educators to use the power of iTunes to deliver education content to students, alumni, staff and the general public.

Stanford on iTunes U (SoiT) is a great example of what you can do with iTunes U.

SoiT is split into two sections. One for the general public which is free to access and another access-controlled area for the Stanford community.

In the public area, you can watch class lectures, interviews and download video and audio podcasts.

This is a great way for faculty and staff to deliver educational content to the devices (iPhones, MacBooks, iPods, etc.) that students and prospective students use.

It’s also a great way to brag to your friends about the coursework you’re doing at Stanford without spending $50K/yr.

The iPhone Application Programming course is a great example of what they offer.

[ iTunes U ] [ Stanford on iTunes ]