I got this in the post today! Looking forward to reading it when I get some time.
If you put that ball on that machine while it wasn’t spinning, it would just roll straight down the lower sides.
The raised edges would keep it in the middle line, but it’s only controlled in one direction. By spinning it, you constantly alternate the position of the tall sides, meaning that the ball is held in the middle, never able to fall off.
Particle accelerators control particles in the same way. Magnetic or electric fields can only direct particles in one plane at a time, so to keep a beam of particles rushing down a particle accelerator in one focused stream, the current gradient must constantly oscillate. This means the particles are constantly held in place, never able to shoot off in one direction.
Here’s the same principle in action: these are tiny pollen grains being held in place by an oscillating field. Rods in the four corners of the beam establish a field that oscillates many times a second to keep the pollen trapped. If it didn’t constantly switch, the pollen would all fly off in one direction.
Oh hey it’s back on my dash perfect! I was just thinking of this the other day!
OHOHOHO wow the Korean alphabet is awesome. The people who designed it were geniuses and were obviously incredibly schooled in the morphology and phonology of their language. HNNGGG
여러분 모두 한국어 쓰세요 한국어 좋음
한국어, 한글은 보면 맨날쓰는거지만 볼수록,쓸수록 예뻐요..참으로 곱구나’3’♥
짱 이쁜 한국어 쓰세요 여러분
신기하게 가르치는군요 보고 신기했다
IT WASN’T JUST ANY OLD DUDE WHO DECIDED, “HEY I WANT TO CREATE A KOREAN ALPHABET.”
IT WAS KING SEJONG, WHO ORDERED HIS ROYAL SCHOLARS TO CREATE THIS ALPHABET SO READING AND WRITING COULD BE ACCESSIBLE TO EVERYONE, EVEN THE PEASANTS. IT WAS PURPOSELY DESIGNED TO BE EASY TO LEARN.
SO SHOUT OUT TO KING SEJONG, WHO REALIZED BEFORE MANY OTHERS THE IMPORTANCE OF UNIVERSAL LITERACY.
YOU GO KING SEJONG, FOUR FOR YOU KING SEJONG
For the future
How to learn written Korean, quickly
Any city with a history reaching as far as the Stone Age will have secret places. In Matera they linger just below the cobbled streets, carved out of layers of stone sediments. Every visitor falls under the spell of the beautiful cave dwellings of Matera—especially when they are restored in a feat of timeless design.
Maybe next time we’re in Italy…