Error Bars The uncertainty in a measurement can be shown on a graph as an?error bar This bar is drawn above and below the point (or from side to side) and shows the?uncertainty?in that measurement ...
每次申請留學(xué)之前，選校都是最重要的環(huán)節(jié)。美國有很多學(xué)校，哪所更適合我們？每年選校的時候，大家都會參考世界權(quán)威排名。下面就來聊一聊U.S. News排名權(quán)威嗎？到底還值不值得參考？ U.S .News排名是什么？ U.S.N...
Uncertainties Precision Precise measurements are ones in which there is?very little spread?about the?mean?value, in other words,?how close?the measured values are?to each other If a measurement is ...
Random & Systematic Errors Measurements of quantities are made with the aim of finding the?true value?of that quantity In reality, it is impossible to obtain the true value of any quantity as t...
Orders of Magnitude When a number is expressed in an?order of 10, this is an?order of magnitude. Example: If a number is described as 3 × 108?then that number is actually 3 × 100 000 000 The?order ...
Scientific Notation & Metric Multipliers Scientific Notation In physics,?measured quantities?cover a large range from the very large to the very small Scientific notation is a form that is base...
SI Base Quantities International System (S.I.) Units There is a seemingly endless number of units in Physics These can all be reduced to seven base units from which every other unit can be derived ...
Analysing Graphs The?gradient?of a graph can be found by: In the case of a straight line graph: using a triangle and the equation for a straight line In the case of a curve: drawing a?tangent?to th...
Drawing Graphs General guidance on drawing graphs Graphs need to have: Clear title Labelled axes Units on the axes Appropriate linear scales without any jumps This means the plotted graph must occu...
