Casio FX-991CW Scientific Constants

 

Universal

1. Planck constant
2. Reduced Planck constant (Dirac constant)
3. Speed of light
4. Vacuum Permittivity
5. Vacuum Permeability
6. Impedance of free space
7. Gravitational constant
8. Planck length
9. Planck time

Electromagnetic

1. Nuclear magneton
2. Bohr magneton
3. Electric charge of Electron
4. Magnetic flux quantum
5. Conductance quantum
6. Josephson constant
7. von Klitzing constant

Atomic & Nuclear

1. Mass of Proton
2. Mass of Neutron
3. Mass of Electron
4. Mass of Muon
5. Bohr radius
6. Fine-Structure constant
7. Classical Electron radius
8. Compton wavelength
9. Proton's Gyromagnetic ratio
10. Compton wavelength of Proton
11. Compton wavelength of Neutron
12. Rydberg constant
13. Magnetic moment of Proton
14. Magnetic moment of Electron
15. Magnetic moment of Neutron
16. Magnetic moment of Muon
17. Mass of Tau

Physico-Chem

1. Atomic mass unit
2. Faraday constant
3. Avogadro constant
4. Boltzmann constant
5. Molar volume of ideal gas at STP
6. Gas constant
7. First radiation constant
8. Second radiation constant
9. Stefan–Boltzmann constant

Adopted Values

1. Standard gravity
2. Standard atmosphere
3. conventional value of von Klitzing constant (Quantum Hall effect)
4. conventional value of Josephson constant (Magnetic flux quantum)

Other

1. Kelvin scale at 0 degree Celsius

Casio FX-991EX Scientific Constants

1. Universal
1. Planck constant
2. Reduced Planck constant (Dirac constant)
3. Speed of light
4. Vacuum Permittivity
5. Vacuum Permeability
6. Impedance of free space
7. Gravitational constant
8. Planck length
9. Planck time
2. Electromagnetic
1. Nuclear magneton
2. Bohr magneton
3. Electric charge of Electron
4. Magnetic flux quantum
5. Conductance quantum
6. Josephson constant
7. von Klitzing constant
3. Atomic & Nuclear
1. Mass of Proton
2. Mass of Neutron
3. Mass of Electron
4. Mass of Muon
5. Bohr radius
6. Fine-Structure constant
7. Classical Electron radius
8. Compton wavelength
9. Proton's Gyromagnetic ratio
10. Compton wavelength of Proton
11. Compton wavelength of Neutron
12. Rydberg constant
13. Magnetic moment of Proton
14. Magnetic moment of Electron
15. Magnetic moment of Neutron
16. Magnetic moment of Muon
17. Mass of Tau
4. Physico-Chem
1. Atomic mass unit
2. Faraday constant
3. Avogadro constant
4. Boltzmann constant
5. Molar volume of ideal gas at STP
6. Gas constant
7. First radiation constant
8. Second radiation constant
9. Stefan–Boltzmann constant
5. Adopted Values
1. Standard gravity
2. Standard atmosphere
3. conventional value of von Klitzing constant (Quantum Hall effect)
4. conventional value of Josephson constant (Magnetic flux quantum)
6. Other
1. Kelvin scale at 0 degree Celsius

Casio FX-991ES Scientific Constants

1. Mass of Proton
2. Mass of Neutron
3. Mass of Electron
4. Mass of Muon
5. Bohr radius
6. Planck constant
7. Nuclear magneton
8. Bohr magneton
9. Reduced Planck constant (Dirac constant)
10. Fine-Structure constant
11. Classical Electron radius
12. Compton wavelength
13. Proton's Gyromagnetic ratio
14. Compton wavelength of Proton
15. Compton wavelength of Neutron
16. Rydberg constant
17. Atomic mass unit
18. Magnetic moment of Proton
19. Magnetic moment of Electron
20. Magnetic moment of Neutron
21. Magnetic moment of Muon
22. Faraday constant
23. Electric charge of Electron
24. Avogadro constant
25. Boltzmann constant
26. Molar volume of ideal gas at STP
27. Gas constant
28. Speed of light
29. First radiation constant
30. Second radiation constant
31. Stefan–Boltzmann constant
32. Vacuum Permittivity
33. Vacuum Permeability
34. Magnetic flux quantum
35. Standard gravity
36. Conductance quantum
37. Impedance of free space
38. Kelvin scale at 0 degree Celsius
39. Gravitational constant
40. Atmosphere

RASPBERRY PI Touchscreen is upside down

sudo nano /boot/config.txt
>lcd_rotate=2

You can rotate both the image and touch interface 180º by entering lcd_rotate=2 instead.

Uninstall Java by deleting the Java Plugin file

Uninstalling Oracle Java involves deleting the Java Plugin file JavaAppletPlugin.plugin.

1. Click on the Finder icon located in your dock
2. Click on Applications tab on the sidebar
3. In the Search box enter JavaAppletPlugin.plugin
4. This will find the JavaAppletPlugin.plugin file
5. Right click on JavaAppletPlugin.plugin and select Move to Trash

Alternative method to uninstall Oracle Java using the Terminal

1. Click on the Finder icon located in your dock
2. Click on Applications tab on sidebar
3. Click on the Utilities folder
4. Double-click on the Terminal icon
5. In the Terminal window, copy and paste the command: sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin

Mavericks input source is set to US keyboard in login screen

defaults read /Library/Preferences/com.apple.HIToolbox.plist

defaults read ~/Library/Preferences/com.apple.HIToolbox.plist

sudo cp ~/Library/Preferences/com.apple.HIToolbox.plist /Library/Preferences/

sudo chmod 644 /Library/Preferences/com.apple.HIToolbox.plist

restart and it's ok~~

Mac 10.10 & 10.11 can not open IDL 8.1

Use ln in terminal.

relinked the file libz.1.dylib (which on my system is located in: /Applications/exelis/idl82/bin/bin.darwin.x86_64), which in fact is linked to this file in the same folder libz.1.2.3.dylib,  to the file libz.1.dylib in /user/lib/

ln -s /usr/lib/libz.1.dylib libz.1.dylib

Updating Python on OS X

Python 更新方法

1. sudo rm -R /System/Library/Frameworks/Python.framework/Versions/2.7
2. sudo mv /Library/Frameworks/Python.framework/Versions/2.7 /System/Library/Frameworks/Python.framework/Versions
3. sudo chown -R root:wheel /System/Library/Frameworks/Python.framework/Versions/2.7
4. sudo rm /System/Library/Frameworks/Python.framework/Versions/Current
5. sudo ln -s /System/Library/Frameworks/Python.framework/Versions/2.7 /System/Library/Frameworks/Python.framework/Versions/Current
6. sudo rm /usr/bin/pydoc
7. sudo rm /usr/bin/python
8. sudo rm /usr/bin/pythonw
9. sudo rm /usr/bin/python-config
10. sudo ln -s /System/Library/Frameworks/Python.framework/Versions/2.7/bin/pydoc /usr/bin/pydoc
11. sudo ln -s /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python /usr/bin/python
12. sudo ln -s /System/Library/Frameworks/Python.framework/Versions/2.7/bin/pythonw /usr/bin/pythonw
13. sudo ln -s /System/Library/Frameworks/Python.framework/Versions/2.7/bin/python-config /usr/bin/python-config