Specials

Merry Xmas Special Question

Merry Xmas to everyone from Team Gyaniz. Q. What is special about the picture below, it was the first of its kind? Ans.: First ever commercial Christmas and New Year Card. John Callcott Horsley (born 1817– died 1903), a British narrative painter and a Royal Academician, designed the very first Christmas and New Year’s card… Continue reading Merry Xmas Special Question

Marquee Collection

Marquee Collection#16

Q. Explain what is happening here ? (The phenomena..) Ans.: Sonic Boom, Breaking the sound barrier, cloud ball effect, Vapour cone, P.G. singularity ( Prandtl–Glauert singularity) are all the right answers. The white halo formed by condensed water droplets is thought to result from a drop in air pressure around the aircraft at transonic speeds.… Continue reading Marquee Collection#16