This cloud resembling a fireball was spotted over Madeira, Portugal! The reason the cloud appeared like this was because light from the sun caught onto a clump of cloud at a lower altitude just as it came into contact with cloud higher up.
Check us out (@meteoramedia) to learn more about our movement!
#space #science#astronomy#nasa#spacex#meteora#madeira#portugal #clouds☁
1 day ago
“When I consider the short duration of my life, swallowed up in the eternity before and after, the little space which I fill, and even can see, engulfed in the infinite immensity of spaces of which I am ignorant, and which know me not, I am frightened, and am astonished at being here rather than there; for there is no reason why here rather than there, why now rather than then. Who has put me here? By whose order and direction have this place and time been allotted to me? . . . The eternal silence of these infinite spaces frightens me.”
—Blaise Pascal, 17th century mathematician.
Lying in bed at night, many of us have attempted to grasp and comprehend eternity. What does it actually mean for time to go on forever? What does it feel like to be dead forever? Damn, these questions used to terrify me. An inability to grasp infinity (which I think is common across all humans that have ever lived) is most commonly faced with dizzying fear and has the potential to send us into an abyss of existential meaninglessness. Only recently have I allowed my failure to truly understand deep time serve as a form of inspiration. With lives of such brevity, why would we spend our precious time in fear of the unknown? It seems like an awful waste of the infinitely unlikely existence that we occupy! We have the beautiful opportunity to wake each day into a world full of mystery and face the challenges it presents us with. One of these challenges includes (for those interested) pondering eternity and voluntarily facing our inevitable deaths. A daunting task, indeed, but not one that should scare us! For being eternally dead is not scary—it is the thought of being dead for eternity that is scary. With practice, I truly believe that it is possible to be in full control of our thoughts, and therefore, our fears. Far exceeding the difficulty of learning any sport, academic discipline, or instrument, mastering the mind lies at the pinnacle of human challenges. We might as well try.
Photo credit: Cassini, NASA
#earth #planet#atmosphere#mindfulness#science#space#chemistry#nasa#protect #learn#read #think#death#life#philosophy
1 day ago
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Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.
Scientific methodology includes the following: .Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)
.Experiment and/or observation as benchmarks for testing hypotheses
.Induction: reasoning to establish general rules or conclusions drawn from facts or examples
.Verification and testing: critical exposure to scrutiny, peer review and assessment.
⚛️ What is "Hydrodynamic Levitation" ? ➡️ The ability to levitate a lightweight ball at top of a jet of water is known as Hydrodynamic Levitation.
➡️ Physics : The ball is levitating in a very stable way. The setup was so stable that even stopping the water for a few seconds doesn’t t stop the ball to levitate. But the question still arises how the ball is still like this?
➡️ Well, the thing happens here is the stream contacts the ball and pushes the ball out, away from the stream. The ball actually will stay there. It is a stable configuration. The water is getting thrown over and down by the ball and since the ball is putting a force over and down on the water. That water is putting a force up and on the ball which keep it right in that stream. It is because there is a bit adhesion between water and ball.
➡️ Further more, Once the ball is levitating, it remains stable because if it drifts too far into the stream, that decreases the flow of water around the ball reducing the force pushing it into the stream and if it drifts too far out that increases the water flow over the ball increasing the force pushing it back into the stream that’s what makes the equilibrium position so stable.
➡️ In the case of levitating a disc, we need to keep it in the right orientation. Then the disc starts levitating. It is hard to levitate the disc than the ball because disc has to maintain the vertical orientation in order to levitate.
So finally, the concept involves getting the water jet to flow vertically. It runs up and over the ball/disc and it will create a stable equilibrium which allows it to levitate.
Video Credit : @youtube
Via @quanta_gramm .