optical phenomena


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optical phenomena

[′äp·tə·kəl fə′näm·ə·nä]
(electromagnetism)
Phenomena associated with the generation, transmission, and detection of electromagnetic radiation in the visible, infrared, or ultraviolet regions.
References in periodicals archive ?
Because the challenges of learning optics are in how students can conceive light concretely and how they can think actively through the interpretation and expression of the optical phenomena they observe (Andersson & Bach, 2005), the proposed use of video conferencing should promote students' interpretive and expressive processes of learning.
In addition, when a high intensity pulse focused on an experimental sample in this study, some nonlinear optical phenomena (e.g., stimulated Raman scattering and self-focusing effect, etc.) may occur, which perhaps is another reason for temperature dependence of laser-induced damage thresholds [13].
While Gilson limits himself to specific references by Dante to optical phenomena, Akbari surveys entire works in their text and structure for broad analogies.
Goethe also mentions that there is a need to add to the known optical phenomena, reflection and refraction, a third one.
The echo here with the "subjective" optical phenomena of blind spots, afterimages, and mouches voulantes may still seem tenuous, but let us turn to a third element in Giraud-Teulon's passage, one that pertains more directly to Le Mystere de la chambre jaune's explicit allusions to scientific discourse and disputes.
This was because the tunnelling and refractive transmissions of parallel and antiparallel spin neutrons through a magnetic layer are the completely same quantum optical phenomena as those occurring in the rigorous solutions of the wave equation when applied to the neutron experiments mentioned in the previous section.
With an emphasis on the 10 types of clouds, the book includes chapters on precipitation, winds, severe weather, and optical phenomena. This guide is enhanced by a multitude of color photographs and easy-to-use cross-references.
This clear and well-illustrated guide to identifying what can be seen in the sky covers cloud classification, cloud formation, optical phenomena such as rainbows, color in the sky, visibility (mist/ fog/sea smoke), precipitation, winds, severe weather (oddly, hurricanes are included here only briefly, under tornados.
You will recognize the two optical phenomena in this comparison: the camera obscura (here, as with Louis Lambert, compared to the dark enclosure of one's mind) and the retinal afterimage (a bright object reappears as a persistent, blurred image once the eyes have been closed).
We suppose that the optical phenomena described in our paper conceal the process we have been searching for, so it is impossible to detect it by using our methods and X-ray radiation with the dose [D.sub.x] [less than or equal to] 300 Gy.
Included in this publication are the definitions of more than 400 color terms detailing color difference equations, optical phenomena, gloss, hiding, color instrumentation, etc.
They conclude that "ancient and medieval rules are highly unreliable." Moreover, they discovered that about 15 percent of people will honestly mistake tiny wisps of cloud or subtle optical phenomena for a barely visible crescent even when the Moon is nowhere in the sky.

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