At the same time the atmosphere is almost opaque to the earth’s thermal radiation (owing to the presence of carbon dioxide and water vapors in the atmosphere—the greenhouse effect). If the earth did not have an atmosphere the average temperature of its surface would be -23°C, while in...
At the same time the atmosphere is almost opaque to the earth’s thermal radiation (owing to the presence of carbon dioxide and water vapors in the atmosphere—the greenhouse effect). If the earth did not have an atmosphere the average temperature of its surface would be -23°C, while in...
Gold has both economic and cultural significance to human societies but, as Liang Zhang and David Groves explain, we owe its presence in the Earth’s crust to repeating cycles of plate tectonics. Liang Zhang &David I. Groves Research Briefing|07 November 2024 ...
This article summarizes the occurrence of these metals in the Earth's crust, their mineralogy, different types of deposits both on land and oceans from the standpoint of the new data with more examples from the Indian subcontinent. In addition to their utility to understand the formation of the...
Researchers have been able to readily identify the forced waves associated with the rotation of the Earth – atmospheric thermal tides – also predicted as a result of Laplace’s initial work. However, despite considerable subsequent work, their presence of Laplace’s waves had remained undetected....
of the AEON’s Earth Stewardship Science Research Institute (ESSRI) is to quantify the region’s natural and cultural heritage at various scales across land and its flanking oceans, as well as its time-scales ranging from the early Phanerozoic (some 540 million years) to the evolution of the...
The objective was to evaluate the lubrication effectiveness of these coatings when subjected to sliding against steel surfaces, in the presence of lubricants with ILs as additives compared to regularly used base oil (BO). Comparing the samples lubricated with ILs and base oil along with various ...
The resulting patches of brown and yellow staining on surface rocks have long been used by prospectors as an indication of the possible presence of valuable ore beneath. As an ore deposit is opened up for the recovery of its metal(s), sulfide grains may be scattered widely over the surface...
The International Boxing Association (IBA) found the presence of XY-chromosomes and increased testosterone levels in her body. Changing the rules during a competition is forbidden, Adams said. The IOC relied on the norms that were in effect during the last Olympic Games. He assured reporters ...
Supergirl tried to keep her continued presence on Earth a secret, but she quickly earned the attention of Project 7734. She fought against Reactron for the second time, defeating him in a manner similar to how she stopped him when they first fought. She also fought against Superwoman, whom ...