Results 71 to 80 of about 9,777 (202)
Introduction: One of astronomy’s first tools to measure the flow of time, a sundial is simply a stick that casts a shadow on a face marked with units of time. As Earth spins, the shadow sweeps across the face.
Mcdonald Observatory +1 more
core
, 2013 Time in written form pervades our social existence. From the daily news, whether on the web or in print, to wall calendars in our homes or offices, which tell us what day it is; from personal watches or cellphones to public clocks, which tell us what ...
Hannah, Robert
core +1 more source
From media evolution to the Anthropocene: Unpacking sociotechnical autopoiesis
Systems Research and Behavioral Science, Volume 42, Issue 2, Page 383-395, March/April 2025.Abstract The Anthropocene, a term encapsulating humanity's significant impact on Earth's geology, is analysed from a media and socio‐evolutionary lens. The exploration investigates the correlation between human socio‐evolution, media, technology, and the inception and progression of the Anthropocene era.
Jesper Tække
wiley +1 more source
Optimization of PEDOT: PSS thin film for organic solar cell application [PDF]
, 2014 As a clean and renewable energy source, the development of the organics solar cells is very promising due to the inorganic solar cell inconvenient production process and material shortness.
Abdul Talib, Yuraimy Yakimin
core
Observing the Environment of Technology
Systems Research and Behavioral Science, Volume 42, Issue 2, Page 423-433, March/April 2025.ABSTRACT This paper explores the conceptualisation of technology as an autopoietic system, addressing the limitations of instrumentalist, deterministic and human‐centred perspectives in understanding the relationship between technology and society. By framing technology as a self‐referential, operationally closed system, the analysis highlights its ...
Steven Watson
wiley +1 more source
Simulation of C and N in the soil microbial biomass after straw Incorporation into soil
Italian Journal of Agronomy, 2006 Straw incorporation into soil seems to limit N leaching as well as improving soil structure and contributing to C storage in soil. A better understanding of its effect on the dynamics of soil N can be reached using a model simulating C and N contents in ...
Paul Sholefield, Francesco Agostini
doaj +1 more source
, 2012 The exhibition brought together a range of artists and product designers who share an interest in how objects are made, displayed / marketed and sold in contemporary culture.
Selby, Mark, Smith, Will
core +1 more source
Measuring the eccentricity of the Earth orbit with a nail and a piece of plywood
, 2012 I describe how to obtain a rather good experimental determination of the eccentricity of the Earth orbit, as well as the obliquity of the Earth rotation axis, by measuring, over the course of a year, the elevation of the Sun as a function of time during ...
Goldstein H +4 more
core +3 more sources
Sun as a Star: Science Learning Activities for Afterschool [PDF]
This educator's guide features eight activities in which younger students use brainstorming, observations, and experiments to learn about the Sun. They will begin by learning that light is our means of studying the Sun, use spectroscopes to separate ...
core
Neutral winds derived from IRI parameters and from the HWM87 wind model for the sundial campaign of September, 1986 [PDF]
Meridional neutral winds derived from the height of the maximum ionization of the F2 layer are compared with values from results of the HWM87 empirical neutral wind model. The time period considered is the SUNDIAL-2 campaign, 21 Sept. through 5 Oct. 1986.
Hedin, A. E. +4 more
core +1 more source