Watch this short video to understand why train wheels are conical instead of cylindrical and why they have rigid axels.
So this is why train wheels are conical
Boeing blowout cost United Airlines $200m
United Airlines blamed the door plug blowout on a Boeing 737 Max jet for a dismal quarter, saying the incident cost it $200m—and it wasn't even on a United Airlines… READ THE REST
Are you ready for four-color traffic lights?
Are you ready for four-color traffic lights? The first traffic light, which controlled horse traffic on the Westminster Bridge in London, consisted of semaphore flags and red and green lights.… READ THE REST
A cube balancing on one corner
Willem Pennings designed a cube that balances on one corner, a refinement of Cubli (previously.) Here you go, Gordy! Happy birthday! READ THE REST
Save $169 on a lifetime license to Microsoft Windows 11 Pro and never look back
TL;DR: Revamp your digital world with this incredible lifetime license to Microsoft Windows 11 Pro, with its seamless interface and top-notch security, for only $29.97 (Reg. $199) until 11:59 PM on 1/07.… READ THE REST
Upgrade your tech for the new year with this refurbished iPad Pro, less than half price right now
TL;DR: Save over $350 on a refurbished Apple iPad Pro 10.5" 256GB, plus a free accessories bundle, with this sweet deal on sale for just $315.99 right now. Tech fans, it's time… READ THE REST
Make your rockstar dreams a reality for only $15.97 with this Guitar Lessons Training Bundle
TL;DR: The perfect last-minute holiday gift for an aspiring rocker, the 2024 Guitar Lessons Training Bundle is only $15.97 (Reg. $480) until 11:59 PM on 12/25. It's really never too late to make… READ THE REST
