via Wikipedia
A Harry Potter-style invisibility cloak is one more step closer to reality thanks to the work of a research team at the FOM Institute for Atomic and Molecular Physics (AMOLF) in the Netherlands, which has successfully harnessed the magnetic field of light to develop meta-materials that can deflect light in every possible direction.
Metamaterials are a broad class of materials which have been specifically engineered to exhibit peculiar properties, particularly with regard to how light behaves when traveling in them: metamaterials with negative refractive indexes could even reflect light so to make entire objects invisible, and scientists have been making progress towards an invisibility cloak that, a few years back, belonged more to the pages of a fantasy novel than to those of a scientific paper. There’s certainly still a long road ahead, but continous advancements have consistently made this dream less and less laughable in the recent past.
As with all electromagnetic waves, light has two oscillating components, an electrical and a magnetic one, meaning that — theoretically — both electricity and magnetism can be used to control how it propagates within an object. However, atoms in standard materials interact only weakly with magnetic fields oscillating over 500THz. Because visible light ranges approximately from 400THz to 800THz, this means we simply can’t hope to exploit magnetism here to help us in our quest for invisibility.
The Latest on: Invisibility cloak
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The Latest on: Invisibility cloak
- Indians and the 'R' wordon July 5, 2020 at 5:36 am
The Indian diaspora is known for its merits of hardwork but is also seen as one that does not rise up and challenge the status quo ...
- invisibility cloakon June 20, 2020 at 5:00 pm
Students at the University of Rochester have developed a clever optical system which allows for limited invisibility thanks to a bit of optic sorcery physics. Almost all invisibility technologies ...
- 'Cloak of invisibility': push to end loophole that keeps financial affairs of Australia's richest privateon June 20, 2020 at 1:04 pm
But to Labor’s shadow assistant minister for treasury, Andrew Leigh, it is, he told parliament during the week, a “cloak of invisibility” for government mates. On each of the four sitting ...
- The 'invisibility cloak' has been lifted from essential workerson June 19, 2020 at 2:46 pm
Ever notice the faces of the cleaning staff in your local foodcourt or shopping mall? Or the garden and landscape team who come regularly to your community to keep the space clean and green? Or the ...
- Can Harry Potter’s invisibility cloak be made in real life? Scientists at UC Berkeley are hopefulon June 12, 2020 at 5:00 pm
Scientists might be a step closer to developing that Harry Potter-style invisibility cloak of your dreams. In 2015, researchers at the University of California, Berkeley, in the US, created a thin ...
- Harry Potter's Invisibility Cloak May Be Possibleon May 28, 2020 at 11:00 pm
JOYCE: But don't expect to see an invisibility cloak on the shopping channel just yet. So far, the meta-materials can hide from microwave radiation. That could be useful in reducing interference ...
- Aldi announce Harry Potter range complete with wands and an invisibility cloakon May 18, 2020 at 9:47 am
Fans of Howarts will be able to get their hands on everything from wands to an invisibility cloak, as well as a Lego version of the Great Hall. The collection is available for pre-order online now ...
- Funko Will Be Releasing Harry Potter with Invisibility Cloak Pop Todayon May 18, 2020 at 9:24 am
Harry gets his hands on the new invisibility cloak. for this figure and is a nice addition to the massive collection of HP Wizarding World Pop world. The Funko Harry Potter is already a massive ...
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