Results 41 to 50 of about 1,225,395 (380)

Marsilio Ficino's Allegorical Reading of Optical Phenomena

open access: yesTeorie vědy, 2020
As a Platonist, Marsilio Ficino (1433–1499) was deeply interested in light  and its qualities. As a matter of fact, the metaphysics of light is so fundamental for him that it appears, treated more or less systematically, almost in all of his works.
Martin Žemla
doaj   +1 more source

Adaptive Optics for Astronomy

open access: yes, 2012
Adaptive Optics is a prime example of how progress in observational astronomy can be driven by technological developments. At many observatories it is now considered to be part of a standard instrumentation suite, enabling ground-based telescopes to ...
Arsenault R   +22 more
core   +1 more source

Noncanonical quantum optics [PDF]

open access: yes, 2000
Modification of the right-hand-side of canonical commutation relations (CCR) naturally occurs if one considers a harmonic oscillator with indefinite frequency. Quantization of electromagnetic field by means of such a non-CCR algebra naturally removes the
Born M   +16 more
core   +2 more sources

Advances in the design and manufacturing of novel freeform optics

open access: yesInternational Journal of Extreme Manufacturing, 2022
Freeform optics has become the most prominent element of the optics industry. Advanced freeform optical designs supplementary to ultra-precision manufacturing and metrology techniques have upgraded the lifestyle, thinking, and observing power of existing
Sumit Kumar, Z. Tong, X. Jiang
semanticscholar   +1 more source

Space‐Confined Growth of 2D InI Showing High Sensitivity in Photodetection

open access: yesAdvanced Electronic Materials, 2020
Layered InI has a great potential in optoelectronic applications due to its direct wide tunable bandgap. However, there is no single report about its 2D synthesis. Here, the growth of high‐quality and ultrathin InI flake (as thin as 8 nm) is reported via
Abdulsalam Aji Suleiman   +6 more
doaj   +1 more source

Probing the conserved roles of cut in the development and function of optically different insect compound eyes

open access: yesFrontiers in Cell and Developmental Biology, 2023
Astonishing functional diversity exists among arthropod eyes, yet eye development relies on deeply conserved genes. This phenomenon is best understood for early events, whereas fewer investigations have focused on the influence of later transcriptional ...
Shubham Rathore   +4 more
doaj   +1 more source

Time-reversed wave mixing in nonlinear optics [PDF]

open access: yes, 2013
Time-reversal symmetry is important to optics. In linear optics, a time-reversed process to laser emission enables total absorption of coherent light fields into an optical cavity of loss by time-reversing the original gain medium.
Chen, Xianfeng   +3 more
core   +2 more sources

Structural dynamics of the plant hormone receptor ETR1 in a native‐like membrane environment

open access: yesFEBS Letters, EarlyView.
The present study unveils the structural and signaling dynamics of ETR1, a key plant ethylene receptor. Using an optimized nanodisc system and solution NMR, we captured full‐length ETR1 in a native‐like membrane environment. Our findings reveal dynamic domain uncoupling and Cu(I)‐induced rigidification, providing the first evidence of metal‐triggered ...
Moritz Lemke   +2 more
wiley   +1 more source

CleAir Monitoring System for Particulate Matter: A Case in the Napoleonic Museum in Rome

open access: yesSensors, 2017
Monitoring the air particulate concentration both outdoors and indoors is becoming a more relevant issue in the past few decades. An innovative, fully automatic, monitoring system called CleAir is presented.
Eugenio Fazio   +5 more
doaj   +1 more source

Lobster Eye X-ray optics for astrophysics: Recent status [PDF]

open access: yes, 2018
X-ray optics in Lobster Eye arrangement represent promising complementary device to narrow field X-ray optics in common use. We present briefly recent status of design, developments, and tests of X-ray optics including Lobster Eye modules developed and ...
Hudec R.   +5 more
core  

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