optical
/ˈɒptɪk(ə)l
/adjective
1Relating to sight, especially in relation to the action of light: optical illusions...
- Radio astronomy is a young field relative to optical astronomy.
- Hooper declared at the outset of his book that optical toys could hone visual perception and, consequently, prime social vigilance.
- The new system should help remove the optical trickery that occurs when assistant referees fail to position themselves correctly on the sidelines.
1.1Constructed to assist sight: an optical aid...
- For some, the use of optical aids compromises genius, and art with it.
- Counting how many Pleiads you can see without optical aid is a good test of both your vision and observing conditions; most people see 6 or 7.
- Normally, when Christine and I do any serious bird watching, it is with the Core Team and their plethora of optical aids and identification tomes.
1.2Relating to the science of optics.Abbe described the optical process so well that this paper has become the foundation upon which much of our understanding of optical science rests today....
- The list even includes a professor of optical sciences, Charles Falco.
- Astronomy is one of the oldest and truest champions of optical science.
2 Physics Operating in or employing the visible part of the electromagnetic spectrum: optical telescopes...
- Of course, the capabilities of optical and infrared telescopes also continued to improve.
- The paper shows that positrons can see defects better than either optical or electron beam microscopes.
- Whether the telescope is operating as an optical or an infrared instrument, rarely will there be an astronomer peering through an eyepiece at the Keck's images.
2.1 Electronics (Of a device) requiring electromagnetic radiation for its operation: integrated optical circuits...
- Here's a look at how test sequencers can speed up tests on optical devices, saving time and money.
- Available optical devices such as CDs and DVDs record information on the surface of the disc.
- Such a device might one day become the CPU of an optical computer.
noun (opticals) Indian
A pair of glasses: he pushed his opticals on to the bridge of his nose
Derivatives
optically
/ adverb ...- But hand recounts of optically scanned ballots will go a long way toward addressing doubts about that technology and about the vendor.
- To illustrate, let us consider a ray of light passing through a cube of optically denser material.
- The parabolic reflectors focus their respective wavelengths onto mechanical devices that act like shutters to optically modulate the beams.