Iarasi bre cu Supermoon-ul vostru?!?

By seamus -
Supermoon in stanga, supermoon in dreapta.

Supermoon pe facebook, supermoon pe twitter.

Inainte sa incep sa combat lucrul asta, sa va spun un lucru scurt si va puteti opri aici din citit: THERE IS NO SUPERMOON.

De ce?



Pai, in primul rand, orbita lunara nu este un cerc perfect. Are momente cand este mai aproape de Pamant, si momente cand este mai departe de Pamant. Acuma, se intampla uneori ca acele momente cand se afla mai aproape de Pamant sa coincida cu faza de luna plina. Iata nasterea Super Moon-ului. Dar uneori se intampla si altfel: unde sunt Super-Secera, Super Eclipsa, Super-Primul-Patrar, Super-Ultimul Patrar?

Desi SuperLuna de pe 23 a fost MAI MARE decat dimensiunea aparenta, diferenta reala este de 7%.

7%. Adica 359.000 km fata de 384.000 in medie, o diferenta de sub 6%. Mai mult, in ciuda acestui fapt, evenimentele de apropiere sunt supercomune ( da da stiu, bad joke).

Dar va stiu. N-ar suna bine sa iesiti la geam sa strigati: "dar haideti sa privim Luna care este o unghie mai mare decat luna normala!" sau "Haideti sa privim acest eveniment UNIC care se intampla de o duzina de ori pe an!".

Doi la mana, pentru cei care vad supercutremure si supermaree asociate cu acest eveniment: taci si du-te acasa. Desi se afla oarecum mai aproape de noi, diferenta de efect gravitational este minora.

In fapt, singurul motiv pentru care Luna pare in mod extraordinar de mare se datoreaza iluziei numite de pshiologi "The Moon Illusion" - despre care chiar te rog sa citesti. Pe scurt, este vorba despre felul in care functioneaza creierul nostru cand vine vorba de a acorda dimensiuni aparente unor corpuri care nu au un sistem de referinta cert: faptul ca se afla mai aproape de orizont dar si in perspectiva spatiului gol forteaza creierul sa-i atribuite dimensiuni false. 

Este acelasi fenomen care te face sa crezi ca discul din dreapta e mai mare, fiind  de fapt identic cu cel din stanga.

Nu ma crezi? Uita-te la superluna dupa care intoarce-te cu curul la ea, si coboara-ti capul printre picioare si uita-te la ea asa, invers si pe sub craci. O sa para normala, si asta pentru ca acest creier al nostru nu are mecanisme predictive pentru vazutul sucit pe axa verticala.

Nu va lasati pacaliti de poze facute cu obiective telephoto de sta mata in coada, si alte prostii de propaganda. In science we trust and science calls bullshit.

Get yo shit together.

Comments

Post a Comment

Popular posts from this blog

The Amazing Fig Wasp Makes You Ponder Life

By seamus -
Image
Hey there! Whenever you've had a tasty fig or two, have you ever paused to ponder on big issues like mortality, the cycle of life and - what the heck are those crunchy  bits inside the fig? The tiny hole at teh bottom of the fruit is  called an ostiole - remember that. What is the connection between figs, wasps and the more philosophical questions about life, death and purpose? It's all in the very peculiar and amazing symbiotic relationship between the fig tree and the fig wasp. When you think of wasps, you're thinking of the black and yellow striped nuisance and pesky cousin of the more benign and lovable bee. In fact, if you were to take a look at the fig wasp, you'd have a hard time telling them apart from a mosquito with the naked eye - not to mention that the males of the species have an odd, wingless worm like appearance. But the destinies of this fascinating insect and the fig tree are intertwined: fig wasps ensure that new fig plants se
Read more

World's Fattest Woman Plans To Get Fatter

By seamus -
Image
I’ve always thought that humanity as a species has reached its apex in the food chain of the planet due to evolution. Objectie natural selection and the challenges our species faced along the eons has shaped its body and pshychology. Evolution gave us our brains, and it was our most succesful tool. We have our civilization now, as our darwinian reward. Yet in may ways, we’ve broken free from the chains of natural selection and are now a sufficiently powerful element on our plan to dictate our own evolution. Now – why the introduction? Well, it’s people like Susanne Eman  that make me realize just how badly evolution (more importantly, natural selection) can be mocked and toppled by our civilization. You see, morbid obesity isn’t a survival trait. Yet we have Susanne here, an 32 yeard old American woman that weighs in at 340 kilos and is proud of it. „ . Deep down I had always known I wanted to be fat, but I thought I was alone in this feeling. ” Says Susanne on her official w
Read more

Little Big Questions - Why Is The Earth Round?

By seamus -
Image
We're smart people. We live in a world where information is literally at our fingertips, and pretty much any answer can be found online, yet how much do we educated people know about facts and phenomenons we take for granted? Source: Wikipedia Sure, nobody's asking you to know everything - with Google, after all, you don't have to. Yet there are some things we do take for granted. Imagine you were alone in the middle of a green field - no internet, no help - and a curious child asks you a simple question: why is the Earth round ? What would you say? These little questions in life that have big implications - this is what this series is about. I've asked a few friends to answer a simple question: Why is the Earth Round? Here are some of their answers: And here are some of their (and other) answers, quoted: Andrei said: "The Earth is round because it's on an elliptical path around the Sun. Moreover, it is not completely round, it
Read more