A5029570235- Atmospheric Ozone and Climate
- Galaxies: Formation, Evolution, Phenomena
- Computational Physics and Python Applications
- Solar and Space Plasma Dynamics
- Astronomy and Astrophysical Research
- Atmospheric and Environmental Gas Dynamics
- scientometrics and bibliometrics research
- Astro and Planetary Science
- Atmospheric chemistry and aerosols
- Astrophysics and Star Formation Studies
- Radio Astronomy Observations and Technology
- Twentieth Century Scientific Developments
- CCD and CMOS Imaging Sensors
- Science Education and Pedagogy
- Infrared Target Detection Methodologies
- Photocathodes and Microchannel Plates
- History and Developments in Astronomy
- History and advancements in chemistry
- Scientific Research and Discoveries
- Optical Polarization and Ellipsometry
- Stellar, planetary, and galactic studies
San Diego City College
2016-2021
Arizona State University
1999-2001
Mesa Community College
2001
The Galactic interstellar extinction curve exhibits a pronounced feature at 2175 Å. most striking characteristic of this is the relatively fixed nature its central wavelength, while width may vary. Small graphite particles are often proposed as carrier UV bump. However, grains single size and shape cannot reproduce observed peak characteristics simultaneously. Here, we investigate to what extent these be reproduced by invoking distribution prolate oblate particles. constants calculated...
We have developed a Java-based teaching tool, "Appreciating Hubble at Hyper-speed" ("AHaH"), intended for use by students and instructors in beginning astronomy cosmology courses, which we made available online. This tool lets the user hypothetically traverse Ultra Deep Field (HUDF) three dimensions over 500x10^12 times speed of light, from redshifts z=0 today to z=6, about 1 Gyr after Big Bang. Users may also view Universe various configurations two different geometry modes - standard that...
Hollyweird Science: From Quantum Quirks to the Multiverse, Kevin R. Grazier and Stephen Cass, Springer, 2015. $24.99 paper (308 pp.). ISBN 978-3-319-15071-0 Buy at Amazon
We have developed a Java-based teaching tool, "Appreciating Hubble at Hyper-speed" ($\textit{AHaH}$), intended for use by students and instructors in beginning astronomy cosmology courses, which we made available online. This tool lets the user hypothetically traverse Ultra Deep Field (HUDF) three dimensions over $\sim500\!\times\!10^{12}$ times speed of light, from redshifts $z\!=\!0$ today to $z\!=\!6$, about 1 Gyr after Big Bang. Users may also view Universe various configurations two...
The effect of the interstellar medium (ISM) on ultraviolet radiation is striking; there a prominent extinction feature (a “bump”) near 2175 A (4.6 mm ). Since its discovery, carrier this has been linked to graphite dust grains. However, study several Galactic lines sight using International Ultraviolet Explorer (IUE) data (E. L. Fitzpatrick & D. Massa 1988, ApJ, 328, 734) showed that peak was tightly confined (less than 1% deviation) 4.6 , while average width found be about 1.0 1 with...