the naked eye

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the naked eye

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. The fine print is so tiny, you can barely make it out with the naked eye.
See also: eye, naked

*naked eye

the human eye, unassisted by optics, such as a telescope, microscope, or spectacles. (*Typically: appear to ~; look to ~; see with ~; visible to~.) I can't see the bird's markings with the naked eye. The scientist could see nothing in the liquid with the naked eye, but with the aid of a microscope, she identified the bacteria. That's how it appears to the naked eye.
See also: eye, naked

with the naked eye

with eyes that are not aided by telescopes, microscopes, or binoculars. The moon is quite visible with the naked eye. Bacteria are too small to be seen with the naked eye.
See also: eye, naked

naked eye

Sight unassisted by an instrument such as a microscope or telescope. For example, These insects are too small to be seen with the naked eye. This expression was first recorded in 1664.
See also: eye, naked

the naked eye

COMMON If something can be seen with the naked eye, you can see it without the help of equipment such as a telescope or microscope. These green insects, just visible to the naked eye, are generally found on the under side of the leaves. Enough light gets through space for us to see thousands of stars with the naked eye.
See also: eye, naked

the naked ˈeye

the normal power of your eyes without the help of an instrument: Bacteria are invisible to the naked eye.
See also: eye, naked
References in periodicals archive ?
The 30x magnification was an advantage over the naked eye in terms of ability to detect agglomerates in the 50 to 120 micron range, and, in many ways, was ideal in detecting roughness that created performance problems for rubber manufacturers.
Space programmes have now proved the Great Wall can be seen with the naked eye from a maximum orbit of 180 miles above Earth.
The specimen that shows the most damage to the naked eye (#1A) has a fitted temperature profile curve that indicates a large amount of damage, as the peak time is significantly delayed and the peak temperature difference is over 63 % less than for the undamaged specimen in the set.
To order your copy of Heaven & Earth: Unseen by the Naked Eye at the special price of 24.
Syon-5 suspends and traps dirt and bacteria in its miniscule crystals so that cleaning professionals can immediately vacuum the crystals, which are undetectable to the naked eye, or wait until a more convenient time.
The experience he offers to the gaze is based on exploring the properties of depth of field: The details are all crystalline and therefore clearer than they would be to the naked eye.
Night Sky with the Naked Eye is a well-conceived, well-written collection of topics and tasks organized around naked-eye observing.
But not using light meters and only using the naked eye is strange in this era.
Some of the 4 star challenges are definitely challenges--for example spotting M81 with the naked eye, and splitting Pluto and Charon using a monster-scope.
They are more attractive to the naked eye," the Mirror quoted her as saying.
Visible to the naked eye, the Large and Small Magellanic Clouds are two of the Milky Way's closest companion galaxies.
These white lines are the tiny patterns found on the surface of a plant petal, invisible to the naked eye.
The Bell Strip can be manufactured to match the exterior of any building --making it almost completely unnoticeable to the naked eye.