Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Gregory A. Topasna"'
Publikováno v:
Publications of the Astronomical Society of Japan. 75:269-278
We present BVRI polarimetric measurements of nine bright stars in a 15′-square region centered on Stock 19. Seven of them satisfy the Serkowski equation for star light polarization due to interstellar dust. This allowed us to estimate the degree of
Autor:
Gregory A. Topasna, Daniela M. Topasna
Publikováno v:
Sixteenth Conference on Education and Training in Optics and Photonics: ETOP 2021.
Autor:
Gregory A. Topasna, Daniela M. Topasna
Publikováno v:
Education and Training in Optics & Photonics Conference 2021.
We present examples of optics and astronomy related activities and demos presented to K-12 teachers. These are simple, inexpensive, and readily available, developed based on the standards of learning to reinforce concepts in the curriculum.
Autor:
Daniela M. Topasna, Gregory A. Topasna
Publikováno v:
Coatings, Vol 10, Iss 1, p 18 (2019)
Coatings
Volume 10
Issue 1
Coatings
Volume 10
Issue 1
There are numerous applications for thin films based chemical pH sensors, in such areas as biomedical, military, environmental, food, and consumer products. pH sensitive films fabricated through the ionic self-assembled monolayers technique were made
Autor:
Daniela M. Topasna, Gregory A. Topasna
Publikováno v:
Fourth International Conference on Applications of Optics and Photonics.
Autor:
Gregory A. Topasna
Publikováno v:
EPJ Web of Conferences, Vol 200, p 02003 (2019)
Polarimetry plays an important part in observational astronomy, but it is all too often given limited attention in astronomy textbooks. Coupled with a sometimes confusing mathematical introduction, students may feel that polarization is a difficult s
Publikováno v:
Publications of the Astronomical Society of the Pacific. 132:044301
Publikováno v:
Publications of the Astronomical Society of the Pacific. 125:1056-1064
We have designed, constructed, and tested an optical polarimeter for use with the Virginia Military Institute (VMI) 0.5 m, f/13.5 Cassegrain telescope. Our instrument is based on the common dual-beam design that utilizes a rotatable half-wave plate a
Publikováno v:
SPIE Proceedings.
Simple, reliable, lightweight, and inexpensive thin films based sensors are still in intense development and high demand in many applications such as biomedical, industrial, environmental, military, and consumer products. One important class of senso
Autor:
Gregory A. Topasna, Daniela M. Topasna
Publikováno v:
SPIE Proceedings.
Students experience the entire process of designing, fabricating and testing thin films during their capstone course. The films are fabricated by the ionic-self assembled monolayer (ISAM) technique, which is suited to a short class and is relatively