5.the point of origin of an earthquake. 6.the primary center from which a disease develops or in which it localizes. v.t. 7.to bring to a focus or into focus:to focus the lens of a camera. 8.to concentrate:to focus one's thoughts. ...
A seismograph records both P and S waves from an earthquake. this difference helps us to find the distanec of the point of origin of the earthquake. this point is called the epicenter. Q. if at the location of a seismograph the P waevs arrive 2 minute earlier, the distance of the ...
Surface-waves —In the report of the California earthquake of 1906 it was shown that the transmission curve of the surface-waves did not pass through the origin but intersected the curves of the longitudinal and transverse body-waves. This suggested, what of course is evident, that the ...
7 An earthquake is the perceptible shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's crust. This sudden motion causes shock waves (seismic waves) to radiate from their point of origin called the focus and travel through the earth. It is these...
1.We should always bear ___ mind that if we are ignoring our health for___( promote). disease will___( gradual) approach us with the help of tiredness. 我们应该牢记:如果我们为了晋升而忽略了我们的健康,疾病便会借助疲劳乘虚而入。 2.I looked for the history book because I...
point of origin (redirected fromPoint Of Origin (album)) initial point (IP) i. A well-defined point, easily distinguishable visually and/or electronically, used as a starting point for the run-in to the target. ii. A point close to the landing area where serials (troop carrier air format...
Four of the World’s Natural Disasters The following four natural disasters destroyed cities and communities around the world. By flood, typhoon, or earthquake, these events have collectively taken millions of human lives. Yangtze ...
hypocentre- the point within the earth where an earthquake originates magnitude- a measure of the energy of an earthquake, specified on the Richter scale radiates- to send out energy such as heat or light, in the form of rays or waves, or be sent out in this form ...
This self-exciting nature of seismicity generates complex clustering of earthquakes in space and time. Therefore, the problem of constraining the magnitude of the largest expected earthquake during a future time interval is of critical importance in mitigating earthquake hazard. We address this problem ...
But she notes that the results are primary. Vassiliou agrees; next steps will mean creating and testing a larger model with hundreds of tennis balls at a research center in earthquake-prone Cuba — an example of a place wh...