Viscosity is the resistance to flow (opposite of fluidity). Viscosity depends on primarily on the composition of the magma, and temperature. Higher SiO2 (silica) content magmas have higher viscosity than lower SiO2 content magmas (viscosity increases with increasing SiO2 concentration in the magma). Lower temperature magmas have higher viscosity than higher temperature magmas (viscosity decreases with increasing temperature of the magma).
Google does not specifically recommend either DirectX or OpenGL for Google Earth. You can configure Google Earth to operate in either DirectX or OpenGL rendering modes.If your system crashes or performs poorly in one mode, Google recommends you switch to the other mode.penGL Overview. OpenGL is a platform-neutral, open API for rendering graphic images. Although the API is different, OpenGL provides Google Earth with the same graphics performance enhancements as DirectX. OpenGL was originally developed by Silicon Graphics Incorporated.
Step 3: Switching Between DirectX and OpenGL. Windows users can run Google Earth (Free and Pro) in either DirectX or OpenGL mode. If you're experiencing strange graphics issues, you should try running Google Earth in each mode to see if one works better for your system.ou will need to close Google Earth in order to switch between DirectX and OpenGL modes. If you're still experiencing issues after trying both DirectX and OpenGL modes, you may need to update your graphics card drivers. In order to do this, you'll first need to determine which graphics card you have.