• The Optical System of a Lantern
    The Optical System of a Lantern
  • WordNet 3.6
    • n optics optical properties "the optics of a telescope"
    • n optics the branch of physics that studies the physical properties of light
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Additional illustrations & photos:

a.--Optical System of Lantern a.--Optical System of Lantern
Optical System without Condenser Optical System without Condenser

Webster's Revised Unabridged Dictionary
    • n Optics That branch of physical science which treats of the nature and properties of light, the laws of its modification by opaque and transparent bodies, and the phenomena of vision.
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Century Dictionary and Cyclopedia
    • n optics That branch of physical science which treats of the nature and properties of light, of the theory of colors (chromatics), of the change which light suffers either in its qualities or in its course when refracted or transmitted through bodies (dioptrics), when reflected from their surfaces or when passing near them (catoptrics), of the structure of the eye and the laws of vision, and of the construction of instruments of introspection, as telescopes, microscopes, etc.
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Chambers's Twentieth Century Dictionary
    • Optics (sing.) the science of the nature and laws of vision and light
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  • Richard Whately
    “In our judgment of human transactions, the law of optics is reversed, we see most dimly the objects which are close around us.”
  • Walter Benjamin
    “The camera introduces us to unconscious optics as does psychoanalysis to unconscious impulses.”


Webster's Revised Unabridged Dictionary
Cf. F. optique, L. optice, Gr. (sc. ). See Optic
Chambers's Twentieth Century Dictionary
Fr. optique—Gr. optikos.


In literature:

As he directed his optics towards me he winced visibly.
"Across China on Foot" by Edwin Dingle
After a single glance their eyes met and each set of optics inquired of the other.
"Romance of California Life" by John Habberton
Snell's law of refraction is one of the corner-stones of optical science, and its applications to-day are million-fold.
"Six Lectures on Light" by John Tyndall
Sposin' it's all a optical delusion of the yeers?
"The End Of The World" by Edward Eggleston
The science of optics can work out these complementary colours with mathematical exactness.
"The French Impressionists (1860-1900)" by Camille Mauclair
By some optical illusion, it seemed to fall away on either hand to the depth of three or four feet.
"The Congo and Coasts of Africa" by Richard Harding Davis
Moreover, they were the most luminous optics I think I have ever seen in any human being.
"The Empty House And Other Ghost Stories" by Algernon Blackwood
It's neuralgia of the optic nerve.
"The Honorable Peter Stirling and What People Thought of Him" by Paul Leicester Ford
The appreciation of this optical effect grows easily into a habit.
"The Art of Travel" by Francis Galton
The majority of those who have written touching the various parts of Optics have contented themselves with presuming these truths.
"Treatise on Light" by Christiaan Huygens

In poetry:

Can all that Optics teach unfold
Thy form to please me so,
As when I dreamt of gems and gold
Hid in thy radiant bow?
"To The Rainbow" by Thomas Campbell
As I take my place among other beings
Am I becoming estranged and alone
Because of my mannerisms?
Is there just an optical illusion?
Are there only obstacles in my path?
"Sensation (Bodh)" by Jibanananda Das
The optic nerve has power so keen,
That ev'ry object by it seen
Is stamped upon the brain;
But they of sluggish mental mold
No vivid photograph will hold,
And scarce a scene retain.
"The Five Senses" by Jared Barhite
What ho! brother Denmark; so now in your eye
A beam—nay, 'tis two—my keen optics descry;
Our "wee German lairdies," friend Hapsburg and I,
Will pull it out quickly—don't wince, we will try.
"William of Prussia: The Aggressor" by Janet Hamilton
Nay, love has put your optics on the bum,
To you are Murphy's gold bricks all O. K.;
His talks go down however rank they come,
For he has got you going, fairy fay.
Ah, well! In that I'm in the box with you,
For love has got poor Willie groggy, too.
"The Love Sonnets of a Hoodlum" by Wallace Irwin
- Admit some other features: Faithless, mean;
Encased in matter; vowed to Gods obscene;
Contemptuous of the impalpable, it swells
On Doubt; for pastime swallows miracles;
And if I bid it face what I observe,
Declares me hoodwinked by my optic nerve!
"Foresight And Patience" by George Meredith

In news:

Strong fiber-optic signups will speed EPB debt payback.
For more information, see the Oct 11 edition of the Mount Vernon Optic-Herald.
For more information, see the June 21 edition of the Optic-Herald.
Luxottica Retail is the leader in eyewear with nearly 5,800 optical retailer locations across North America.
Laser Diode Creates World's Smallest Semiconductor Laser For Optical Computing.
Optical turnstiles to be installed at main entrances to show floor.
Now it turns out it could be a bad measurement caused by a loose fiber optic cable.
EAGLE EYES OPTICS Explorer by Jonathan Paul Eyewear REVOLUTION 556 from Revolution Eyewear.
An optical mosaic shows the Titanic's battered stern.
Matrox to showcase Avio fiber-optic KVM extender at NAB 2012.
For more information, see the June 28 edition of the Mount Vernon Optic-Herald.
The company multicoats each optical surface.
) Lesco Optical offers the greatest deals in Tucson.
Fiber-optic cable to Cuba is working.
See " Hearing Aid -Compatible Internal LTE/WWAN Bar-Type Mobile Phone Antenna," Microwave And Optical Technology Letters, April 2011, p 774.

In science:

Mandel, L., Wolf, E. : Optical coherence and quantum optics.
Fluctuations relations for semiclassical single-mode laser
The optical attenuator was adjusted so that a 150 kHz detection rate was obtained with optimized coupling. The measured input optical pump power on the crystal for that rate is 9.8 mW. The experiment we perform here is a perfect representation of Alice in the case where she uses a heralded singlephoton source.
Practical random number generation protocol for entanglement-based quantum key distribution
There is a clear degeneracy in the models because of the relationship between certain parameters, e.g. optical depth and geometric shell thickness, or optical depth and the temperature at the inner edge of the dust shell.
Silicon carbide absorption features: dust formation in the outflows of extreme carbon stars
The correlation between optical depth and percentage SiC is such that lower optical depths require more SiC.
Silicon carbide absorption features: dust formation in the outflows of extreme carbon stars
This may simply be due to the pathlength dependence of optical depth (see Eqn. 1), since τ depends on the geometric size of the dust shell the oldest shells should have the largest optical depth.
Silicon carbide absorption features: dust formation in the outflows of extreme carbon stars