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Imperceptible by normal vision
- be invisible to the naked eye To be imperceptible by normal vision that has not been enhanced or augmented in any way.
idioms.thefreedictionary.com/be invisible to the naked eyeBe invisible to the naked eye - Idioms by The Free Dictionary
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May 5, 2015 · 'With the naked eye' implies that it can be seen when using an (optical) instrument - e.g. Jupiter's satellites can't be seen with the naked eye, but can be seen through a telescope. That kind of thing? But this doesn't encompass the situation when the thing is obscured...
Naked eye, also called bare eye or unaided eye, is the practice of engaging in visual perception unaided by a magnifying, light-collecting optical instrument, such as a telescope or microscope, or eye protection.
be invisible to the naked eye. To be imperceptible by normal vision that has not been enhanced or augmented in any way. Because bacteria are invisible to the naked eye, it was only relatively recently in human history that we even became aware of their existence.
visible to the naked eye. Able to be perceived by normal vision that has not been enhanced or augmented in any way. Because bacteria are not visible to the naked eye, it was only relatively recently in human history that we even became aware of their existence.I wish they would make the fine print on their products visible to the naked eye.
appear to the naked eye. 1. To be perceived by normal vision that has not been enhanced or augmented in any way. Used especially in reference to that which looks different when viewed with the aid of some kind of mechanical enhancement.
Apr 26, 2018 · What may appear invisible to the naked eye, shows up under the rays of a black light because certain stains and objects absorb the short wavelengths of UV light and reflect it back almost immediately.
If something can be seen with the naked eye, it can be seen without the help of an instrument: This organism is too small to be seen with the naked eye . The police found traces of blood on his jacket that were invisible to the naked eye .