Results 121 to 130 of about 1,226,273 (354)

Modelling the total solar eclipse in 2024 with COCONUT

open access: yesAstronomy & Astrophysics
Context. Coronal modelling is crucial for a better understanding of solar physics and heliophysics. Accurate plasma conditions at the outer boundary of a solar corona lead to more precise space weather predictions.
Baratashvili T.   +4 more
doaj   +1 more source

Eclipse radius measurements [PDF]

open access: yes
Methods for predicting the path edges and reducing observations of total solar eclipses for determining variations of the solar radius are described. Analyzed observations of the 1925 January eclipse show a 0.7 (arc second) decrease in the solar radius ...
Dunham, D. W.   +3 more
core   +1 more source

Preparing for and Observing the 2017 Total Solar Eclipse [PDF]

open access: yes, 2015
I discuss ongoing plans and discussions for EPO and scientific observing of the 21 August 2017 total solar eclipse. I discuss aspects of EPO based on my experiences at the 60 solar eclipses I have seen.
Pasachoff, Jay
core  

Characteristic features of the solar corona during the eclipse of 1 August 2008 [PDF]

open access: green, 2011
V. I. Skomorovsky   +6 more
openalex   +1 more source

Strategy for One‐Step Optimization of Metal Oxide Passivating Contact Materials for Si Heterojunction Solar Cells through Growth Angle Variation

open access: yesSmall, EarlyView.
A one‐step oblique angle reactive sputtering approach enables simultaneous tuning of bulk and interfacial stoichiometry in a metal oxide/ silicon heterojunction. In case of vanadium oxides, growth angle variation controls the formation of stoichiometric SiO2, ternary SiOx(V) interlayer, and phase purity of vanadium oxide, considerably simplifying the ...
Aparajita Mandal   +3 more
wiley   +1 more source

Color Portion of Solar Radiation in the Partial Annular Solar Eclipse, October 3rd, 2005, at Helwan, Egypt

open access: yesActa Polytechnica, 2010
Measurements were made of various solar radiation components, global, direct and diffuse and their fractions during the partial annular solar eclipse on October 3rd, 2005 at Helwan, Egypt (Lat. 29.866◦ N and Long. 31.20◦ E), and an analysis has been made.
A. H. Hassan   +3 more
doaj  

Total Solar Eclipse [PDF]

open access: yes, 2018
Our mission objective was to capture the total solar eclipse that occurred on August 21, 2017. To assemble all the payloads (video, still image and Iridium) and the ground station tracking system.
Gudhi, Praveen   +8 more
core  

Highly Selective Photocatalytic Degradation of Organic Pollutants by ZnO@C Core–Shell Nanoparticles Via Superoxide Radical Pathway

open access: yesSmall, EarlyView.
This study investigates a novel two‐step synthesis of ZnO@C nanoparticles (NPs), featuring enhanced photocatalytic dye degradation via selective superoxide (O2•−) radical generation under visible light. The precisely engineered carbon shell uniquely improves light–matter interaction and visible‐light absorption, as well as facilitates efficient charge ...
Neena Prasad   +10 more
wiley   +1 more source

Effects of the solar eclipse on 15 January 2010 on the surface O3, NO, NO2, NH3, CO mixing ratio and the meteorological parameters at Thiruvanathapuram, India [PDF]

open access: yes, 2010
In this paper, we present the effect of total solar eclipse on surface O3, NO, NO2, NH3, CO mixing ratio and the meteorological parameters on 15 January 2010 at Thiruvanathapuram, India.
Sharma, S. K.   +10 more
core  

In Situ Growth of 2D Perovskite Nanocrystals to Induce β–Phase of PVDF for Piezoelectric Nanogenerators with Ultra‐High Output Voltage

open access: yesSmall, EarlyView.
In situ grown 2D perovskite nanocrystals embedded in PVDF enable flexible piezoelectric nanogenerators with greatly enhanced β‐phase content and a high d33∗${\mathrm{d}}_{33}^{\mathrm{*}}$ of 35.16 pm/V. The devices deliver up to 66.54 V, exhibit light‐enhanced piezoelectricity, and maintain durability over 12000 cycles, offering a stable energy source
Yang Yang   +11 more
wiley   +1 more source

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