搜尋結果
American retail corporation Walmart has been the world's largest company by revenue since 2014. [1] The list is limited to the largest 50 companies, all of which have annual revenues exceeding US$130 billion. This list is incomplete, as not all companies disclose their information to the media and/or general public. [3]
according to International Monetary Fund estimates [n 1] [1] Countries by nominal GDP in 2019 [n 2] > $20 trillion. $10–20 trillion. $5–10 trillion. $1–5 trillion. $750 billion – $1 trillion. $500–750 billion. $250–500 billion.
Super angel. Insurance is a means of protection from financial loss in which, in exchange for a fee, a party agrees to compensate another party in the event of a certain loss, damage, or injury. It is a form of risk management, primarily used to protect against the risk of a contingent or uncertain loss. An entity which provides insurance is ...
- Development
- Details
- Richter Magnitudes
- Magnitude Empirical Formulae
- External Links
Prior to the development of the magnitude scale, the only measure of an earthquake's strength or "size" was a subjective assessment of the intensity of shaking observed near the epicenter of the earthquake, categorized by various seismic intensity scales such as the Rossi-Forel scale. ("Size" is used in the sense of the quantity of energy released,...
The Richter scale was defined in 1935 for particular circumstances and instruments; the particular circumstances refer to it being defined for Southern California and "implicitly incorporates the attenuative properties of Southern California crust and mantle." The particular instrument used would become saturated by strong earthquakes and unable to...
The Richter magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs (adjustments are included to compensate for the variation in the distance between the various seismographs and the epicenterof the earthquake). The original formula is: 1. M L = log 10 A − log 10 A 0 ( δ ) = log 10 [ A / ...
These formulae for Richter magnitude ML are alternatives to using Richter correlation tables based on Richter standard seismic event (M L = 0 {\displaystyle M_{\mathrm {L} }=0} , A = 0.001 m m {\displaystyle A=0.001\mathrm {mm} } , D = 100 k m {\displaystyle D=100\mathrm {km} } ). Below, Δ {\displaystyle \textstyle \Delta } is the epicentral distan...
Seismic Monitor – IRIS ConsortiumPerspective: a graphical comparison of earthquake energy release – Pacific Tsunami Warning CenterChina,[h] officially the People's Republic of China (PRC),[i] is a country in East Asia. With a population exceeding 1.4 billion, it is the world's second-most populous country after India. China spans the equivalent of five time zones and borders fourteen countries by land.[j] With an area of nearly 9.6 million square kilometers (3,700,000 sq ...
