PRESENTING A NEW SHELF

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  • Gyaan

    The formula of firecracker contains 10-20% of potassium perchlorate, 35-50% of barium nitrate, 1-8% of perlite powder, 5-20% of magnesium aluminium alloy, 3-15% of aluminium powder, 10-25% of titanium powder and 3-10% of brim stone.

  • Belts & Zones

    In addition to cyclones and anticyclones, Jupiter is known for its distinctive belts and zones – white and reddish bands of clouds that wrap around the planet. Strong east-west winds moving in opposite directions separate the bands. Juno previously discovered that these winds, or jet streams, reach depths of about 2,000 miles (roughly 3,200 kilometers). Researchers are still trying to solve the mystery of how the jet streams form. Data collected by Juno’s MWR during multiple passes reveal one possible clue: that the atmosphere’s ammonia gas travels up and down in remarkable alignment with the observed jet streams.

    “By following the ammonia, we found circulation cells in both the north and south hemispheres that are similar in nature to ‘Ferrel cells,’ which control much of our climate here on Earth”, said Keren Duer, a graduate student from the Weizmann Institute of Science in Israel and lead author of the Journal Science paper on Ferrel-like cells on Jupiter. “While Earth has one Ferrel cell per hemisphere, Jupiter has eight – each at least 30 times larger.”

    Juno’s MWR data also shows that the belts and zones undergo a transition around 40 miles (65 kilometers) beneath Jupiter’s water clouds. At shallow depths, Jupiter’s belts are brighter in microwave light than the neighboring zones. But at deeper levels, below the water clouds, the opposite is true – which reveals a similarity to our oceans.

    “We are calling this level the ‘Jovicline’ in analogy to a transitional layer seen in Earth’s oceans, known as the thermocline – where seawater transitions sharply from being relative warm to relative cold,” said Leigh Fletcher, a Juno participating scientist from the University of Leicester in the United Kingdom and lead author of the paper in the Journal of Geophysical Research: Planets highlighting Juno’s microwave observations of Jupiter’s temperate belts and zones.

  • LIFE OF A CELL

    Our physical existence is a cell, trillions of them at least ten times more than stars in a milky way. A cell is a living being- a machine made of up to 50k different proteins. It has no will, no purpose; it just is. But it is still an individual. Together, our cells form immense structures for jobs like preparing food, gathering resources transporting stuff around, scanning the environment, and so on. If we extract them from our bodies and put them in the right environment, they will continue to exist for a while. So our cells can live without us, but we can’t exist without them. Surprise- if we take all your cells away, there is no “you” anymore. Is there a line where a pile of our cells stops being us? For example, billions of your cells will continue to live inside someone else if you donate an organ. Does this mean that a part of us became a part of another person? or is this another body keeping your part of the body alive?
    Let us imagine an experiment- you and a random person exchange cells – one at a time until all our cells get replaced. At which point would they become you? Personally, the image of ourselves as a static thing is untenable. Almost all of our cells get replaced throughout our lifetime. So a part of us is constantly dying. What we consider as ourselves is just a snapshot
    When we die, we go back to the ecosystem and restart as bits of living pieces. As plants take in protein and other molecules of our cells, we become a part of their system, and when other animals consume these plants, our molecules transfer into their body – this process goes on through the higher levels in the food chain. Also, some molecules move into other non-living parts of the ecosystem. So do we die? Well, I think in a sense we do since we lose our identity and traits that make us “us.” But as a whole, we never die; we go back to being the part of the living earth without any consciousness, just like our cells in a multicellular system
    The fuzzy borders that makeup reality are hard to grasp. Maybe ideas like life and death are not absolutes but ideas belonging to a fluent pattern, a pattern that is lost in this strange universe

  • Shubho Bijoya

    বিজয়া নাচ জটিল অনেক স্থানে | সেই এক মুহূর্ত |