Technology Scientists invented metal that refuses to sink
MIT scientists accidentally create the blackest material ever
Good news for goths -- black somehow just got even blacker. MIT engineers have cooked up a material that's 10 times blacker than anything else previously reported. Capturing more than 99.96 percent of any incoming light, the material is made of vertically aligned carbon nanotubes (CNTs) grown on chlorine-etched aluminium foil. And it was discovered by accident. The researchers had actually been experimenting with ways to grow CNTs on electrically conductive materials -- such as aluminium -- to boost their electrical and thermal properties.
If you’re trying to build something that won’t sink, making it out of metal seems like a terrible idea.
We make boats and ships out of metal because it’s sturdy and lasts a long time, but it weighs a lot and, if something goes wrong, there’s nothing stopping it from sinking to the bottom.
Researchers from the University of Rochester have come up with a potential solution.
It’s a metal that absolutely hates water, strongly repelling it and creating pockets of air that allow the metal to float under just about any circumstance.
Judge refuses to toss charges against Coast Guard lieutenant accused in domestic terror plot
A federal judge on Wednesday reportedly declined to drop any of the four charges against a U.S. Coast Guard lieutenant who has been accused of plotting domestic terrorism. Attorneys representing Lt. Christopher Hasson had asked Judge George J. Hazel to drop two counts of unlawful possession of firearm silencers against Hasson as well as a drug count against him, according to The Washington Post. They reportedly argued that the gun charges violate his Second Amendment rights.
Its inventors believe it could revolutionize ship design and create truly unsinkable boats.
The secret is a special pattern that is etched into the surface that traps air and prevents water from making clean contact, pushing it away.
The team says this “superhydrophobic” etching technique was inspired by the natural world. The bodies of fire ants are hydrophobic, and spiders that craft underwater webs use their bodies to trap air and carry it with them beneath the surface.
“The key insight is that multifaceted superhydrophobic (SH) surfaces can trap a large air volume, which points towards the possibility of using SH surfaces to create buoyant devices,” the researchers explain in a new research paper.
To demonstrate how the metal behaves, the researchers devised an experiment with two seemingly identical metal discs.
So What Is This Secretive Chinese Sonic Weapon Exactly?
The “sonic gun” apparently uses infrasound to disperse crowds, rioters. The Chinese Academy of Scientists has invented a new handheld anti-riot weapon.The weapon uses sound to disperse crowds, causing discomfort to individuals until they leave the area.The U.S. has looked into similar nonlethal weapons, using strobes and the LRAD sound cannon.A new weapon invented by Chinese scientists uses low frequency sound waves to cause physical distress, forcing rioters, protesters, or anyone else the wielder wants to vacate the area.
One of the disks is “normal” metal, while the other is the same material with the special etching technique applied. As you can see in the video, the superhydrophobic metal disc refuses to sink, even when pushed deep beneath the water.
Perhaps even more important for real-world use cases, the metal retains its water-repelling properties even when damaged.
The researchers drilled several holes in the disc, revealing that it still floated the surface even when its structural integrity was compromised.
This proves that metal etched in such a way could be useful in the manufacturing of boats and ships, potentially giving them real “unsinkable” properties and allowing them to remain afloat even when damaged.
Scientists invented metal that refuses to sink .
If you're trying to build something that won't sink, making it out of metal seems like a terrible idea. We make boats and ships out of metal because it's sturdy and lasts a long time, but it weighs a lot and, if something goes wrong, there's nothing stopping it from sinking to the bottom. Researchers from the University of Rochester have come up with a potential solution. It's a metal that absolutely hates water, strongly repelling it and creating pockets of air that allow the metal to float under just about any circumstance. Its inventors believe it could revolutionize ship design and create truly unsinkable boats.
University of Rochester researchers, inspired by diving bell spiders and rafts of fire ants, have created a metallic structure that is so water repellant, it refuses to ...
Float or Sink - Cool Science Experiment
Scientists seem to be infatuated with objects that float and sink. Even non-scientists find great joy in dropping stuff in water to see if it floats or sinks. Fans of ...