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1) Compare this with the parabola x 2 = 4 f y , {\displaystyle x^{2}=4fy,} (2) which has its vertex at the origin, opens upward, and has focal length f (see preceding sections of this article). Equations (1) and (2) are equivalent if R = 2 f . Therefore, this is the condition for the circle and parabola to coincide at and extremely close to the origin. The radius of curvature at the origin ...
Takeaway. The ability to defocus your eyes on command is a natural one, but not everyone can do it. It’s accomplished by having the ability to relax the ciliary muscles in your eyes, which ...
Focus discography. The discography of the progressive rock band Focus consists of 11 studio albums, 1 compilation album, 6 live albums, and 8 singles.
Three lineups of Focus in 1974, 2014, 2023 Focus are a Dutch progressive rock band from Amsterdam. Formed in November 1969, the group originally included keyboardist, flautist and vocalist Thijs van Leer, guitarist Jan Akkerman, bassist Martijn Dresden and drummer Hans Cleuver. The group broke up in 1978, but later reformed with various personnel changes in 1985, 1997 and finally 2002. The ...
Many conditions or health problems can cause sudden confusion, and some are more serious than others: They include: Alcohol or drug abuse. Carbon monoxide poisoning. Very low amounts of sodium or ...
A benign bone growth doesn’t usually pose a risk to your health aside from the possibility of pain and discomfort. In some cases, sclerotic bone lesions may cause visible deformities or impact ...
In semiotics, a sign is anything that communicates a meaning that is not the sign itself to the interpreter of the sign. The meaning can be intentional, as when a word is uttered with a specific meaning, or unintentional, as when a symptom is taken as a sign of a particular medical condition. Signs can communicate through any of the senses ...
4 /15. Some people call hyperfocus the “superpower” of ADHD. Because you’re so absorbed in a task, you can get more done quicker. You may also get better at it. Playing a video game with ...