The proton aurora is invisible to the naked eye and has never been viewed from space.
About 4, 000 boat owners are to be given the liquid - which is invisible to the naked eye - to paint their property.
Magnetic, nonradioactive nanoparticles (a tiny fraction of the thickness of a human hair and invisible to the human eye) are injected into the subject, where they bind only to known breast cancer cells within the body.
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The samples revealed "no-see-um" gold, invisible to the naked eye but detectable via assay.
As Gaffney notes, enforcement of keyword association could prove difficult for FDA. Unlike visible words, metadata sits in the source code and HTML of a page, and is largely invisible to the untrained eye.
After all, it has a habit of making giant steps from the tiniest of changes - so tiny in this case, it was invisible to the human eye.
The concept is certainly familiar, and functions in much the same way as a QR code, generating flashing light that's invisible to the human eye instead of a cumbersome 2D square.
Mr Plotnik and his colleagues placed a white cross above the elephants' right eyes and an invisible cross over the left eye, so that neither smell nor a memory of paint being applied should tell the elephants where the conspicuous marking was.
Diamonds can also be marked by a laser with a little symbol invisible to the eye.
Fungi, bacteria and viruses are largely invisible to the naked eye but not to the naked body.
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It is a quiet, tacit, mandatory add-on for all FHA mortgage consumers, measured in basis points and virtually invisible to the naked eye.
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Your lives in service will be defined by something else, something inside of you -- invisible to the eye but obvious for all to see.
An aeroplane shrouded in such kit might be invisible to the human eye but it would be picked up readily by radar, which operates at radio wavelengths.
Jared also gets some help from Hogsqueal, a bird-eating hobgoblin (voiced by Seth Rogen) who has sworn vengeance on Mulgarath and who'll spit in your eye to expose the ogre's invisible minions.
In order to see light, the eye must absorb it, but in order for a person to be invisible, the body must not absorb any light.
The observers must represent an eagle-eye corps dedicated to protecting voters' rights while remaining virtually invisible and avoiding actions that could be viewed as heavy-handed or intimidating.
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