Notes on nuclear physics

 Nuclear state notation ^2S+1L_J.

Weak mixing angle

According to the latest Review of Particle Physics, 2018, by Particle Data Group,  p. 127, experimental weak mixing angle is

This number is surprisingly very close to a simple equation

Then 

Difference is 0.47%.

Quadomino-3D

The next classic tile game
Theme : 3 dimensional quadomino-like game

Number of players : 1-…

Components :

70 unique four-colored-squares that can interlock to one another (see figure 1 right).

These 70 pieces are :

With 0, 1, 2, 3 are white, red, green, brown.

Rules overview :

Try to make shapes (see figure 1 left). Only pieces with matched color can be connected. For example :

- try to make 11 of 1´1´1 cubes simultaneously, or

- try to make 2 of 2´2´2 cubes simultaneously, or

- try to make a 3´3´3 cube, etc.

Figure 1. Quadomino-3D. 

Created by : hantarto@gmail.com

Fourthello

The next classic board game
Theme : elegant solution to othello/reversi-like game for 2-4 players

Number of players : 2-4

Components :

One hexagonal-board + 96 four-colored-triangular-pyramids (see figure 1)

The board is notched, so that the triangular-pyramids can fit firmly onto the board.

Rules overview :

Starting with configurations shown in figure 1. And the rule is the same as othello/reversi.

Figure 1. Fourthello for 2, 3 and 4 players (starting positions). 

Created by : hantarto@gmail.com

16-hour clock

1 day = 16 hours x 64 minutes x 64 seconds