A protractor is used to draw and measure angles. An angle is the amount of turn between two lines. Angles are measured in degrees with the symbol °. Angles can be labelled with 3 letters (eg DEF) to ...
Need to get a handle on a minuscule angle? All you need is your trusty plasmon nano-protractor, a new tool that can be used to do things like measure how DNA twists as it replicates. Created by ...
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