Results 51 to 60 of about 175,361 (324)

Astronomer and Metrologist Fricis Blumbahs (1864–1949) [PDF]

open access: yesActa Baltica Historiae et Philosophiae Scientiarum, 2015
Fricis Blumbahs (Fritz Blumbach) was one of the first Latvians to acquire higher education in astronomy and he made an outstanding contribution to the culture and science of Latvia during his lifetime.
Jānis Kaminskis, Jānis Klētnieks
doaj   +1 more source

Islamic Astronomy of Abbasid Era (750-1258 AD)

open access: yesJournal of Islamic History and Manuscript, 2022
Astronomy is a particular field in Islam related to the interests of daily Muslim worship practices, such as determining the beginning of prayer times, qibla direction, and the beginning of the Qamariyah month.
Muhammad Ilham Aziz, Ahmad Musta'id
doaj   +1 more source

Digital Astronomy in Education

open access: yesInternational Journal of Online and Biomedical Engineering (iJOE), 2007
What causes seasons? Why day and night durations are so different with seasons? Why the position of the full moon seems directed to the south in summer while it seems directed to the north in winter? It is the purpose of this computer simulation to provide an interactive application, programmed in Java language to explore the issues related to the ...
openaire   +2 more sources

High‐Entropy Magnetism of Murunskite

open access: yesAdvanced Functional Materials, EarlyView.
The study of murunskite (K2FeCu3S4) reveals that its magnetic and orbital order emerges in a simple I4/mmm crystal structure with complete disorder in the transition metal positions. Mixed‐valence Fe ions randomly occupy 1/4 of the tetrahedral sites, with the remaining 3/4 being filled by non‐magnetic Cu+ ions.
Davor Tolj   +18 more
wiley   +1 more source

Monitoring and evaluating astronomy outreach programmes: Challenges and solutions

open access: yesSouth African Journal of Science, 2015
A number of tools exist to guide the monitoring and evaluation of science, technology, engineering and mathematics (STEM) education and outreach programmes. Fewer tools exist for evaluating astronomy outreach programmes.
Sarah Chapman   +4 more
doaj   +1 more source

Al1‐xScxN‐Based Ferroelectric Domain‐Wall Memristors

open access: yesAdvanced Functional Materials, EarlyView.
(a) Conductive atomic force microscopy (CAFM) image of the initial state bidomain structure of the Al0.85Sc0.15N (a) showing an enhanced conductivity of the head‐to‐head domain boundary. (b) CAFM image of the same area after application of several −65 V, 1 s voltage pulses showing lower conductivity of the generated tail‐to‐tail domain walls.
Haidong Lu   +11 more
wiley   +1 more source

The introductory astronomy course at the University of Cape Town: probing student perspectives

open access: yes, 2014
We report on research carried out to improve teaching and student engagement in the introductory astronomy course at the University of Cape Town. This course is taken by a diverse range of students, including many from educationally disadvantaged ...
Allie, Saalih   +2 more
core   +5 more sources

A Beginner’s Guide to Working with Astronomical Data

open access: yesThe Open Journal of Astrophysics, 2020
This elementary review covers the basics of working with astronomical data, notably with images, spectra and higher-level (catalog) data. The basic concepts and tools are presented using both application software (DS9 and TOPCAT) and Python. The level of
Markus Pössel
doaj   +1 more source

What Makes Some People Think Astrology Is Scientific? [PDF]

open access: yes, 2010
Citizens in both North America and Europe are apt to read horoscope columns in newspapers and magazines. While some people read these casually and purely for entertainment, some believe that astrology has scientific status and can provide real insight ...
Allum, Nick
core   +1 more source

Flux‐Regulated Crystallization of Perovskites Using Machine Learning‐Predicted Solvent Evaporation Rates for X‐Ray Detectors

open access: yesAdvanced Functional Materials, EarlyView.
By integrating machine learning into flux‐regulated crystallization (FRC), accurate prediction of solvent evaporation rates in real time, improving crystallization control and reducing crystal growth variability by over threefold, is achieved. This enhances the reproducibility and quality of perovskite single crystals, leading to reproducible ...
Tatiane Pretto   +8 more
wiley   +1 more source

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