Search results
Results from the WOW.Com Content Network
Causality is the relationship between causes and effects. [1] [2] While causality is also a topic studied from the perspectives of philosophy and physics, it is operationalized so that causes of an event must be in the past light cone of the event and ultimately reducible to fundamental interactions. Similarly, a cause cannot have an effect ...
Between the start of the Industrial Revolution in 1750, and the year 2005, the increase in the atmospheric concentration of carbon dioxide (chemical formula: CO 2) led to a positive radiative forcing, averaged over the Earth's surface area, of about 1.66 watts per square metre (abbreviated W m −2).
[155] [156] The expansion of spacetime could cause the destruction of all matter in a Big Rip scenario. If our universe lies within a false vacuum , a bubble of lower-energy vacuum could come to exist by chance or otherwise in our universe, and catalyze the conversion of our universe to a lower energy state in a volume expanding at nearly the ...
In physics, there are equations in every field to relate physical quantities to each other and perform calculations. Entire handbooks of equations can only summarize most of the full subject, else are highly specialized within a certain field. Physics is derived of formulae only.
A report from the charity on hurricanes, floods, typhoons and storms influenced by climate change warns that the top 10 disasters each cost more than 4 billion US dollars in damage (£3.2 billion).
It is believed that most major crowd disasters can be prevented by simple crowd management strategies. [20] Crushes can be prevented by organization and traffic control, such as crowd barriers. On the other hand, barriers in some cases may funnel the crowd toward an already-packed area, such as in the Hillsborough disaster.
Although heat waves do not cause as much economic damage as other types of severe weather, they are extremely dangerous to humans and animals: according to the United States National Weather Service, the average total number of heat-related fatalities each year is higher than the combined total fatalities for floods, tornadoes, lightning ...
Movement of tectonic plates against each other sends seismic waves rippling across earth’s surface