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Hacker News

New 3D thermal invisibility cloak makes objects disappear from infrared cameras (www.sciencedaily.com)
71 points by stevenalowe •                         
tejtm •                         
jagged-chisel •                         
Does this work for things that emit heat?
glitchc •                         
Let me answer your question with a question: Does the infrared camera detect emitted heat?
jagged-chisel •                         
Generally? Yes.

In this case? No idea.

SeanAnderson •                         
Doesn't everything emit heat? :)
chorsestudios •                         
no, the vacuum of space does not emit heat
thenthenthen •                         
The article mentions thats the next step
AuthAuth •                         
This is gonna be going straight to Ukraine
MrDrMcCoy •                         
I certainly hope so!
whatsakandr •                         
This headline is wrong. This has nothing to do with thermal cameras. It's "cloaking" by making it appear to have the same bulk thermal properties as it's surroundings.
schiffern •                         
Yes. Unfortunately many people are reading this thinking it's a FLIR invisibility cloak.

FYI Ukraine already has FLIR invisibility cloaks (fancy camo space blankets): https://www.youtube.com/watch?v=GfdF3iIwoX4

This is thermal cloak, explained here: https://www.youtube.com/watch?v=CM2RJi4mRZ0&t=52s

Notably it only works after the heat flow settles back down to equilibrium. If you're moving, it doesn't work.

natpalmer1776 •                         
Which seems like it would be good for fixed installations that need to remain undetected, no?
schiffern •                         
The other caveat is that it only works if you're embedded inside a solid object. ;)

If you're in free space, the surface can't shine its IR differently in different directions, so under FLIR it will just look like the average ambient temperature. This is no better than existing (cheap and light) space blanket camo systems.

graboy •                         
Wow, a blanket!
thenthenthen •                         
More like an iron maiden
scotty79 •                         
When you cover yourself with the blanket, others see the blanket. When you cover yourself with this, others see background.
bamboozled •                         
Bad luck skynet
keyle •                         
And that Predator monster!
tescreal •                         
Next cyberpunk wizpop toy: thermoptic cameoflage.

The future is turning out to be fascinating as concerning.

nxobject •                         
A Faraday for heat, eh?
dalmo3 •                         
I've always wanted to hide apples inside pears.
sebstefan •                         
> Although the current cloak represents a major advance, the researchers want to develop more sophisticated versions capable of performing additional functions. One particularly important goal is to conceal objects that produce heat themselves

I read the entire thing thinking it could cloak a soldier

scotty79 •                         
It could cloak a well insulated soldier from being a dark spot on the background.
vivzkestrel •                         
- future soldier 2 loading....
nickandbro •                         
I believe the Russians tried something similar in Ukraine with cloaking themselves to fool infrared drones.
qlte •                         
Using 50 cent Mylar blankets which ... did not work like they hoped from the videos I've seen.
computemachines •                         
Maybe this could be used to hide a cold spot from a wafer bake pin.
bitwize •                         
We have AIs hacking people's computers and brains, and now we have the Major's thermo-optic camouflage. They were right to keep the newest Ghost in the Shell set in 2029-2030. Seems like it's right on time.