Researchers Hide Objects with Mirage Effect
Scientists have created a working cloaking device using sheets of carbon nanotubes which create the “mirage effect” observed in deserts or on long roads in the summer.
What's the Latest Development?
Scientists have created a working cloaking device which harnesses the ability of sheets of carbon nanotubes (CNTs) to conduct heat and transfer it to surrounding areas, thus creating the mirage effect observed in deserts or on long, hot roads—an optical phenomenon due to light rays bending to produce a displaced image of distant objects. A steep temperature gradient causes light rays to bend away from an object concealed behind the new device, making it 'invisible.'
What's the Big Idea?
Though it sounds like something Harry Potter would use, there are more practical applications. For instance, the research results provide useful insights into the optimization of nanotube sheets as thermoacoustic projectors for loudspeaker and sonar applications, where sound is produced by heating using an alternating electrical current.
Upstreamism advocate Rishi Manchanda calls us to understand health not as a "personal responsibility" but a "common good."
- Upstreamism tasks health care professionals to combat unhealthy social and cultural influences that exist outside — or upstream — of medical facilities.
- Patients from low-income neighborhoods are most at risk of negative health impacts.
- Thankfully, health care professionals are not alone. Upstreamism is increasingly part of our cultural consciousness.
The Bajau people's nomadic lifestyle has given them remarkable adaptions, enabling them to stay underwater for unbelievable periods of time. Their lifestyle, however, is quickly disappearing.
- The Bajau people travel in small flotillas throughout the Phillipines, Malaysia, and Indonesia, hunting fish underwater for food.
- Over the years, practicing this lifestyle has given the Bajau unique adaptations to swimming underwater. Many find it straightforward to dive up to 13 minutes 200 feet below the surface of the ocean.
- Unfortunately, many disparate factors are erasing the traditional Bajau way of life.
We explore the history of blood types and how they are classified to find out what makes the Rh-null type important to science and dangerous for those who live with it.
- Fewer than 50 people worldwide have 'golden blood' — or Rh-null.
- Blood is considered Rh-null if it lacks all of the 61 possible antigens in the Rh system.
- It's also very dangerous to live with this blood type, as so few people have it.
An innovation may lead to lifelike evolving machines.
- Scientists at Cornell University devise a material with 3 key traits of life.
- The goal for the researchers is not to create life but lifelike machines.
- The researchers were able to program metabolism into the material's DNA.
SMARTER FASTER trademarks owned by The Big Think, Inc. All rights reserved.