So this is why train wheels are conical

Quint BUILDs created this exquisitely-engineered machine to throws knives with laser-guided accuracy. He explains that knife-throwing "in theory is simple. Match the knife's rotation to the distance so the tip hits the target. But in practice, it's hard." "Cutting-edge technology should do this easily, if we can keep it from destroying itself," he says. READ THE REST

I always enjoy short YouTube videos about engineering marvels, and this one is pretty incredible! The Palace Theater in New York is being preserved by raising it 30' off street level. READ THE REST

Bartosz Ciechanowski's animated tour of how a mechanical watch works is the best I've ever seen. Each component, from the spring to the second hand, is explained in plain English with clear, interactive diagrams. It really wound me up! Mechanical watches are not as accurate as digital ones. They require maintenance and are more fragile.… READ THE REST

We thank our sponsor for making this content possible; it is not written by the editorial staff nor does it necessarily reflect its views. Tablets sit in an interesting segment. Larger than a smartphone but more portable than a laptop, they offer plenty of power for day-to-day tasks without consuming too much bag room. So if… READ THE REST

We thank our sponsor for making this content possible; it is not written by the editorial staff nor does it necessarily reflect its views. This year, instead of giving to others, it's time to think of yourself. You can't be reliant on your goodwill alone to feel fulfilled, and cash can usually fill that void… READ THE REST

We thank our sponsor for making this content possible; it is not written by the editorial staff nor does it necessarily reflect its views. Everyone needs a reliable machine for work, pleasure, or whatever else they do on their computer (your business, not ours.) However, with the holidays around the corner, we know cash is tight, and… READ THE REST