Related Experiment Video
Updated: Aug 17, 2025
26:41
Perspectives on Neuroscience
Published on: July 31, 2007
5.0K
100 years of Emil Wolf: introduction
Summary
Emil Wolf
Area of Science:
- Physical optics
- Wave optics
- Optical science
Background:
- Emil Wolf's foundational research in physical optics.
- His significant contributions to wave properties of light.
- The ongoing inspiration his work provides to researchers.
Purpose of the Study:
- Commemorate Emil Wolf's legacy in a special issue.
- Highlight research in areas of Wolf's expertise.
- Discuss Wolf's life and influence on optical science.
Main Methods:
- Review of Emil Wolf's seminal works.
- Compilation of current research in physical optics.
- Focus on optical coherence theory, inverse problems, singular optics, imaging, and polarization.
Main Results:
- Demonstration of the continued relevance of Wolf's research.
- Showcasing advancements in optical coherence, inverse problems, singular optics, imaging, and polarization.
- Illustrating the breadth of Wolf's impact on the optics community.
Conclusions:
- Emil Wolf's research remains a cornerstone of modern optics.
- The special issue reflects the vitality and interdisciplinary nature of optics.
- Wolf's influence continues to shape the future of optical science.
Related Concept Videos
01:17Wald-Wolfowitz Runs Test II
298
The Wald-Wolfowitz runs test, commonly referred to as the runs test, is a nonparametric test used to assess the randomness of ordered data. The test evaluates the number of runs, which are consecutive sequences of similar elements within the data. If the number of runs is significantly higher or lower than expected, the data is considered non-random, indicating a detectable pattern or structure.
For binary data, runs are identified using symbols such as + and −, or equivalently, 1s and...
For binary data, runs are identified using symbols such as + and −, or equivalently, 1s and...
298
01:17Wald-Wolfowitz Runs Test I
705
The Wald-Wolfowitz test, also known as the runs test, is a nonparametric statistical test used to assess the randomness of a sequence of two different types of elements (e.g., positive/negative values, successes/failures). It examines whether the order of the elements in a sequence is random or if there is a pattern or trend present. This nonparametric test applies to any ordered data despite the population and sample data distribution, even if a higher sample size is available.
The test works...
The test works...
705
01:19Introduction to Wood
305
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
The structural integrity of the...
305
01:06Echo
568
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
568
01:15Lenz's Law
4.2K
The direction in which the induced emf drives the current around a wire loop can be found through the negative sign. However, it is usually easier to determine this direction with Lenz's law, named in honor of its discoverer, Heinrich Lenz (1804–1865). Lenz's law states that the direction of the induced emf drives the current around a wire loop always to oppose the change in magnetic flux that causes the emf.
If a bar magnet is moved toward a coil such that the magnetic flux...
If a bar magnet is moved toward a coil such that the magnetic flux...
4.2K
01:30Electromagnetic Waves in Matter
3.1K
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
3.1K