Hydrogen Generation with Seawater, Aluminum, and… Coffee?

A team at MIT led by [Professor Douglas Hart] has discovered a new, potentially revelatory method for the generation of hydrogen. Using seawater, pure aluminum, and components from coffee grounds, …read more Continue reading Hydrogen Generation with Seawater, Aluminum, and… Coffee?

China’s Nuclear-Powered Containership: A Fluke Or The Future Of Shipping?

Since China State Shipbuilding Corporation (CSSC) unveiled its KUN-24AP containership at the Marintec China Expo in Shanghai in early December of 2023, the internet has been abuzz about it. Not …read more Continue reading China’s Nuclear-Powered Containership: A Fluke Or The Future Of Shipping?

Keeping the Noise Down Under the Sea

A pinwheel sits in an aquarium to simulate an offshore wind turbine. Bubbles come up from the "seabed" to encircle it to demonstrate a bubble curtain with an image of a sound waveform overlaid with the video to show the sound confined to the area within the bubble curtain.

Since sound is the primary sense used by most ocean life, disruptions to the natural noise levels in the ocean from human activities can be particularly problematic for marine life. …read more Continue reading Keeping the Noise Down Under the Sea

Ask Hackaday: What Are Magnetic Gears (Good For)?

Magnetic gears are surprisingly unknown and used only in a few niche applications. Yet, their popularity is on the rise, and they are one of the slickest solutions for transmitting mechanical energy, converting rotational torque and RPM. Sooner or later, you’re bound to stumble upon them somewhere, so let’s check them out to see what they are and what they are good for.

What Are Magnetic Gears?

Where conventional gears use mating surfaces of mechanical interlocking teeth, magnetic gears employ alternating magnetic fields to transmit torque. For a long time, magnetic gears have only played a minor role in engineering. …read more

Continue reading Ask Hackaday: What Are Magnetic Gears (Good For)?