Lifeboat Foundation

Electric generators have a plethora of uses—ranging from automotive to aircraft to microgrids. There is currently a strong desire to reduce the size and increase the efficiency of the devices.

Researchers at Purdue University have come up with an effective way to reduce the size and increase the efficiency of the moderate- to low-power electric generators used in those applications.

A wound rotor synchronous machine contains a field winding—a group of insulated current-carrying coils—on the rotor used to create a rotating magnetic field and regulate the output voltage. Associated with this winding are losses, which generate heat that must be removed from the spinning rotor. Permanent magnets can also be used to generate the magnetic field with much less loss and heat generation, but this approach does not facilitate output voltage regulation.

A machine that speeds up evolution is revolutionizing genome design and selection of designer microbes.

The quantum interference of electrons that have been scattered by light has been used to produce holograms of the underlying electromagnetic fields — and might open up methods for studying materials at high temporal and spatial resolution. A fresh approach to imaging light fields.

Does a mysterious mirror world lurk in the shadows of perceived reality? It could explain a lot.

When Jeff Bezos and his first Amazon staff began selling books from his garage, they started an enterprise that is now the largest online retailer in much of the world. As Amazon celebrates its 25th birthday, it’s the world’s most valuable public company and Bezos is the richest person on the planet.

For 50 years, evolutionary theory has emphasized the importance of neutral mutations over adaptive ones in DNA. Real genomic data challenge that assumption.

Amazon is selling a slew of tiny homes on its Website for different price points including ones that are under $20,000.

How can bee stings help in the battle against HIV? Could snake venom be used to treat high blood pressure? Kath Nightingale investigates.