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The Petzval field curvature is equal to the Petzval sum over an optical system, where is the radius of the i th surface and the n s are the indices of refraction on the first and second side of the surface. [4] Petzval curvature of a spherical mirror is double of its curvature and Petzval radius of a mirror is equal to its focal length.
Syncope (fainting) Blurred vision. Dyspnoea (shortness of breath) Tinnitus (ringing in the ears) Migraine. Stevens–Johnson syndrome / toxic epidermal necrolysis (potentially fatal skin reactions) Motorial weakness. Creatinine increase. Elevated liver enzymes.
Box office. est. ₹ 696 million [1] Shaadi Ke Side Effects ( transl. Side effects of marriage) is a 2014 Indian Hindi -language romantic comedy film directed by Saket Chaudhary, and starring Farhan Akhtar and Vidya Balan. It is the sequel to the 2006 film Pyaar Ke Side Effects. The film is produced by Balaji Motion Pictures and Pritish Nandy ...
Methaemoglobinaemia. Erythema multiforme. Low blood sugar. Hepatitis (liver swelling) Crystalluria (crystals in the urine) Urinary obstruction causing difficulty passing urine. Lowered mental acuity. Depression. Tremor.
Aberration (astronomy) A diagram showing how the apparent position of a star viewed from the Earth can change depending on the Earth's velocity. The effect is typically much smaller than illustrated. In astronomy, aberration (also referred to as astronomical aberration, stellar aberration, or velocity aberration) is a phenomenon where celestial ...
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
– Richard Wright The album was originally released in a gatefold LP sleeve designed by Hipgnosis and George Hardie. Hipgnosis had designed several of the band's previous albums, with controversial results; EMI had reacted with confusion when faced with the cover designs for Atom Heart Mother and Obscured by Clouds, as they had expected to see traditional designs which included lettering and ...
Frequency-resolved optical gating ( FROG) is a general method for measuring the spectral phase of ultrashort laser pulses, which range from sub femtosecond to about a nanosecond in length. Invented in 1991 by Rick Trebino and Daniel J. Kane, FROG was the first technique to solve this problem, which is difficult because, ordinarily, to measure ...