Results 1 to 10 of about 9,843 (113)

Reflector and Portrait Lens in Celestial Photography [PDF]

Nature, 1897
IT has been much discussed recently, whether the reflector is preferable to a portrait lens in celestial photography. It may be known to the readers of NATURE that I am interested in this subject, since I believe I was the first to use the portrait lens for the purpose of seeking for large and wide-spread nebulae.
Max Wolf
openaire   +2 more sources

Comet Photography with the Two-Foot Reflector

The Astrophysical Journal, 1902
G. W. Ritchey
openaire   +2 more sources

Nickeled Glass Reflectors for Celestial Photography

The Astrophysical Journal, 1911
Roger Wood
openaire   +2 more sources

REGISTRATION OF INTERNAL MORPHOLOGICAL CHARACTERISTICS OF THE TOOTH USING DENTAL PHOTOGRAPHY [PDF]

Journal of IMAB, 2015
Purpose: Dental photography plays important role in the transfer of information between dentists as well as in communication between them and the dental technicians.
Todor T. Uzunov, Dimitar Kosturkov, Tsonko Uzunov, Dimitar Filchev, Boiko Bonev, Andon Filchev   +5 more
doaj   +1 more source

Color and photography in the restorative dentistry. A brief communication about color temperature, dental color and the use of light and photography in dental practice

Эндодонтия Today, 2020
Relevance. Optical properties of dental tissues can be captured by photography, considering the characteristics of the light sources. Therefore photography might become a way to communicate the color and the characterizing aspects of the teeth, reducing ...
S. Spanò, P. Messina, G A. Scardina
doaj   +1 more source

Aluminium Feeds for Reflector for NadirSAR [PDF]

, 2018
With the long term aim of developing a NadirSAR quadrotor UAV system specialized for monitoring broad acre grain fields, a large aperture load bearing antenna to use as the main structural element was sort.
Gray, Derek, Le Kernec, Julien
core   +1 more source

Progress in shock wave diagnostic technology based on velocity interferometers for laser inertial confinement fusion [PDF]

Matter and Radiation at Extremes
Laser-driven inertial confinement fusion (ICF) is an important experimental platform for high-energy-density physics research under extreme conditions. In ICF research, high-quality shock waves are key to fusion energy release.
Feng Wang, Yulong Li, Zanyang Guan, Xiaoshi Peng, Xiangming Liu, Dong Yang, Jiamin Yang, Zongqing Zhao   +7 more
doaj   +1 more source

Supplementary document for A New l1 Norm based Sparse Reconstruction Approach to Compressed Ultrafast Photography of Velocity Interferometer System for Any Reflector - 6569047.pdf

, 2023
A New l_1 Norm based Sparse Reconstruction Approach to Compressed Ultrafast Photography of Velocity Interferometer System for Any Reflector: supplemental ...
Gan, Huaquan, Li, Haiyan, Wang, Feng, Huang, Yunbao, Li, Yulong, Huang, Zexiong   +5 more
openaire   +1 more source

Spatio-temporal influence of tundra snow properties on Ku-band (17.2 GHz) backscatter [PDF]

, 2015
During the 2010/11 boreal winter, a distributed set of backscatter measurements was collected using a ground-based Ku-band (17.2 GHz) scatterometer system at 26 open tundra sites.
Derksen, Chris, Dugauy, Claude, Gunn, Grant, Kasurak, Andrew, Kelly, Richard, King, Joshua, Rutter, Nick, Watts, Tom   +7 more
core   +1 more source

Separating Reflection and Transmission Images in the Wild

, 2018
The reflections caused by common semi-reflectors, such as glass windows, can impact the performance of computer vision algorithms. State-of-the-art methods can remove reflections on synthetic data and in controlled scenarios.
AK Barros, AM Bronstein, Anat Levin, E Collett, N Kong, O Gallo, Olaf Ronneberger, R Kaftory, T Xue, YY Schechner   +9 more
core   +1 more source