I write about Economics & Politics and sometimes I post pictures of things I like. Find me elsewhere on the intrenet:
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Your Mass is NOT from Higgs Boson — 1veritasium
This is really cool and interesting. 99% of the mass of a proton/neutron (and therefore almost 99% of the mass of everything) comes from empty space, coming from the virtual particles that pop in and out of existence in the vacuum between the quarks.
Quantum World in Conflict with Everyday Experience
A team at the Univ. of Vienna, led by the Austrian physicist Anton Zeilinger, has now carried out an experiment with photons, in which they have closed an important loophole. The researchers have provided the most complete experimental proof that the quantum world is in conflict with our everyday experience. The results of this study appear this week in the renowned journal Nature.
Read more: http://www.laboratoryequipment.com/news/2013/04/quantum-world-conflict-everyday-experience
I just started reading ‘Entanglement’ by Amir D. Aczel. It’s an old book and so far the info inside it is nothing more than basic review, but I need a refresher in Quantum Mechanics.
Adventures in Thought & Philosophy
Random Fact #2: One of my degrees is in Philosophy. It seemed so useless at the time but thinking back, it’s by far the best decision I ever made. This video brought back some great memories.
My most useless degree? Finance with a concentration in Real Estate. I learned absolutely nothing from this that I couldn’t have learned from a single 100-page booklet or 2-weeks training.
Open Letter to the President: Physics Education (by minutephysics)
I wish this weren’t a petition to the president. We increase spending again and again with no results. Why do we depend on the government for education? Even in this video it lists resources that don’t come from schools. The physics classes I’ve taken at BYU have been challenging, but the best help didn’t come from my teachers or my textbooks, they came from the internet. We need to stop telling kids they can only learn things in schools. Education can happen more than between 8 AM and 3 PM every day for 9 months out of the year. We live in the future! We have everything at our fingertips for the price of an internet connection, and we’re asking the president to make sure we learn more?
I was lucky enough to take AP Physics in high school with an MIT PhD as our teacher. Our high schools are a joke. They don’t want you to learn they want you to learn how to pass a standardized test. They want you to have basic knowledge, anything beyond that is up to you to discover and learn.
(via byulibertarian)
The problem, often not discovered until late in life, is that when you look for things in life like love, meaning, motivation, it implies they are sitting behind a tree or under a rock. The most successful people in life recognize, that in life they create their own love, they manufacture their own meaning, they generate their own motivation.
For me, I am driven by two main philosophies, know more today about the world than I knew yesterday. And lessen the suffering of others. You’d be surprised how far that gets you.
— Neil deGrasse Tyson (via nedhepburn)(via kateoplis)
No matter how long the slinky is, the bottom of the slinky will stay still (hover) until the top reaches it. Even if the slinky is over 1000 feet long.
This kind of shit is why I love physics.
Science!
Woah.
Is this for real? Any physics fans have more info and can possibly explain this without too much jargon?
Update: More info at blogs.discovermagazine.com
Holy shit this gif
Mmm… The easiest way to explain it without any physics jargon is probably this: When the slinky distended like that, it’s found a state of balance between the tension of the slinky to return to the compressed state and the force of gravity. In this state, the length the slinky has extended will give it a tension of 1G, meaning that the slink is pulling on itself in an equal amount that gravity is pulling on the slinky.
So now think of the slinky again just in terms of what forces are being applied. The top is experiencing a downward pull of G (gravity) + G (tension equal to the pull of gravity. The bottom part is being pulled downward by the same amount of G (gravity), but is being pulled up by the tension of the spring, so -G (meaning it’s being pulled upward with the same level of force that the top is being pulled downward). So when you let the top go, it’s being pulled at G+G, so it gets pulled down. The bottom is being pulled up and down with the same force (G-G) so it just kind of sits there.
Eventually the two ends meet, and (+G+G)+(-G+G) level out to just the whole thing being pulled down with G (the pull of gravity).
Anyway, that’s about as simple as I can make it. The trick is to understand that each end of the slink is experiencing the same pull and direction of gravity, but opposite directions of tension. The whole thing’s being pulled down, but the bottom part is being pulled up at the same time by the tension of the spring.
That’s jargon.
Easiest way to explain this is that the slinky is a spring and the bottom of it is being pulled up (since the spring is compressing) with the same force as it is being pulled down (by gravity).
This means that the very bottom of the spring is at an equilibrium and won’t begin to accelerate until the spring is fully compressed (no longer pulling the bottom of the slinky upward).
@Suga_Shane - Jargon-free since ‘83.
(via shorterexcerpts)
Online Course: “Quantum Physics” with Prof. V. Balakrishnan, Department of Physics, IIT Madras.
Complete course here (31 lectures):
