If you knew the angular size of this object, you could easily calculate the actual size. This diagram might help. If you know θ and r, you can find the length L. But here is the problem.

Angular cheilitis can look like swollen or red patches at the corners of your mouth. It’s caused by a variety of things, including saliva buildup, bacterial infections, smoking, and vitamin B ...

It is only by using a coincidence measurement that we could show that the conservation of the orbital angular momentum holds for each single photon pair. In contrast, cumulative detection methods ...

Angular cheilitis, also called perleche or angular stomatitis, is a common inflammatory condition of the angles of the mouth. It is found in elderly edentulous patients as well as those who still ...