Day: June 29, 2026

Categories
Putin and Putinism

Postleitzahl 13439 • 2 Orte im Postleitzahlengebiet 13439


PLZ 13439 PLZ 13439 … 13357 13359 13403 13405 13407 13409 13435 13437 13439 13465 13467 13469 13503 13505 13507 13509 13581

Categories
Putin and Putinism

Define aperture and angular aperture – EMBIBE


Linear aperture is the effective diameter of the surface of spherical mirror or lens is called linear apertureIt is the effective area of a lens or mirror where the refraction or reflection takes place Angular aperture is the angle subtended by the reflecting surface of the spherical mirror or lens at the principal focus The angular aperture of …

Categories
Russia and Ukraine

Lenin: Mr. Struve Exposed by His Colleague – Marxists Internet Archive


Mea culpa, mea maxima culpa! I have been and shall continue to be “malevolently biased” against Messrs. the Struves. Then there is the other charge—on a matter of fact. Did I pretend not to understand or did I actually fail to understand, and was it impossible to understand? That is the question.