Continental roots stress Earth's surface. FULL STORY. The Earth's rigid lithosphere varies laterally in thickness and strength. Areas of thicker, older lithosphere known as continental roots penetrate deeper into the mantle in some places under continents.
A monoblock is a type of amplifier used in car audio systems. What  the monoblock type of amplifier does is to split the two channels  of audio into two separate mono systemâ¦s, giving a little more kick  to the bass coming out of subwoofers.
Best Answer: The 'h' (lower-case) stands for 'hybrid model'. Transistor amplifiers may be modeled as 2-port devices with 1 port being the 'input' and the other port the 'output'. Any 'black box' 2-port device has sets of parameters that can be used to describe the electrical characteristics of what's inside the box. One type of these parameters is called the hybrid set, or h parameters. For the common-emitter bi-polar junction transistor amplifier h21 is called hfe. 'h' is for hybrid, 'f' is for 'orward, 'e' is for common Emitter. The difference between hFE and hfe is: FE is for a fixed DC bias and a fixed DC current gain (and that must be specified for each value of hFE).