Results 31 to 40 of about 191,844 (199)

Calibrating Nighttime Satellite Imagery with Red Photometer Networks

open access: yesRemote Sensing, 2023
The data retrieved from satellite imagery and ground-based photometers are the two main sources of information on light pollution and are thus the two main tools for tackling the problem of artificial light pollution at night (ALAN). While satellite data
Borja Fernandez-Ruiz   +5 more
doaj   +1 more source

Contaminación de luz en Michoacán (campaña para cielos oscuros)

open access: yesInvestigaciones Geográficas, 2001
The deterioration of night sky due to light pollution- the glare produced by artificial light that gets lost towards the sky - is a topic that is beginning to be considered in some countries, which are taking measures to regulate the characteristics of ...
Eduardo Antaramián Harutunián
doaj   +1 more source

Scientists Observe Never-Before-Seen Green Glow in Mars Night Sky

open access: yes, 2023
Scientists have observed a fascinating green glow in the Martian night sky for the first ...
Georgiou, Aristos   +2 more
core   +1 more source

Light brightness data near sea turtle nests as measured from the horizon and zenith using a Sky Quality Meter

open access: yesData in Brief, 2022
A Sky Quality Meter (SQM) is a photometer designed to measure night sky brightness. SQMs have been used to interpret light fields for various purposes, including studies of relationships between directional light brightness and sea turtle hatchling ...
Shigetomo Hirama   +4 more
doaj   +1 more source

Artificial light emission analysis for the city of St. Petersburg

open access: yesSHS Web of Conferences, 2018
Artificial light emission within the limits of major cities is increasing year by year. The level of this rapid growth depends on the influence of complex factors such as urban enlargement, air pollution, environmental conditions, lack of outdoor ...
Kolgushkina Svetlana
doaj   +1 more source

Effect of light pollution on self-reported sleep quality and its components: Comparative assessment among healthy adult populations in a rural and an Urban area of West Bengal, India

open access: yesIndian Journal of Public Health, 2020
Background: Light pollution is inappropriate or excessive use of artificial light. Nighttime sky radiance is an effective measure to study its effects on individual sleep quality. Objectives: The study is aimed to measure the effect of light pollution on
Arista Lahiri   +4 more
doaj   +1 more source

Investigation of internal gravitational waves by an infrared camera of the entire sky over the territory of Yakutia

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2022
Internal gravitational waves are space-time fluctuations of air masses in the atmosphere. In addition to the longitudinal component, they also have a transverse component, which distinguishes them from ordinary acoustic waves.
Mordosova, O.V., Koltovskoi, I.I.
doaj   +1 more source

The Sky Glows [PDF]

open access: yesNature, 1908
THESE phenomena on about June 30 and July 1, referred to in my letter (NATURE, July 9, p. 221), I termed displays of Aurorae, and was prompted to apply that title by the descriptions given in some of the London newspapers, which stated that well-defined streamers had been observed from the metropolis.
openaire   +2 more sources

Influence of a Light Source Installed in a Luminaire of Opal Sphere Type on the Effect of Light Pollution

open access: yesEnergies, 2020
The article presents the results of the studies concerning the influence of a light source installed in luminaire of opal sphere type on the light pollution effect of the night sky.
Przemyslaw Tabaka, Pawel Rozga
doaj   +1 more source

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