Pro tip, anytime you're doing geometry with circles or spheres, keep at the forefront of your mind that anything tangent to the circle is perpendicular to the radius drawn to that point of tangency.

提， 时候你在处理与圆或球体有关几问题时，都要记住， 与圆相切直线都垂直于连接该切点半径。

Near the magnetic poles of a neutron star, an electron can be accelerated by the magnetic field and emit a so-called curvature photon, tangential to the magnetic field line.

在中子星磁极附近，电子可以被磁场加并发射与磁场线相切所谓曲率光子。

Finally, you draw a curve that's tangent to each wavelet, meaning that it touches each half circle at exactly one point.

最后，绘制一条与每个小波相切曲线，这意味着它恰好在一个点接触每个半圆。

And again, since this is a point where the corner sphere is tangent to the inner sphere, it's also a point of the inner sphere.

而且，由于这一点是角落球体与内球体相切地方，它也是内球体上一个点。