Category: Nature

  • Perihelionic Winters !

    Winter and Summer are occurring counter intuitively due to valuation in a day long configuration of earth and sun. A few million kms distance change from sun isn’t causing the season, but how exactly we are tilted even at the shortest distance from sun can cause winter. And this stands to change over 26000 years,…

  • Interesting planetary facts !

    Mars winter and summer would have a wider variation due to Sun’s relative distance being a 17%; variation in radiation is 34% (2 x 17%) For earth since distance of earth and sun varies from maximum to minimum within 3.4% the variation in sun’s radiation energy is 2×3.4 = 6.8% Also Venus is far more…

  • Review of Gravity, the movie, discussions.

    A discussion on Space movie Gravity, which I saw recently. I remember one fact, that concerns, Physics, the roughly 50000 miles an hour (correct?) speed of ISS level debris that was coming, it set me thinking, are they violating the Relativistic Laws? For a while, and then I realize its per hour, not second, (that…

  • Whats Light. A small primer.

    A small primer on optical attributes of Light. Manmohan Dash, ( — largely edited, 18-19 January 2014, originally from; Wednesday, March 27, 2013 at 3:58 pm UTC + 05:30 ) Updated Discourse. If you ever seem, to be caught up between: they say light always moves at the same speed-c, they keep on harping, why…

  • Why human eyes are sensitive to only visible light?

    “Why Human Eyes Are Sensitive To Only Visible Light”. These processes are arbitrary, which is somewhat more technically referred as “contingency”. Its not just for the case of vision that this arbitrariness is present, but all forms of biological properties. eg A conch shell is spiral in a certain way and this is only specific…