Volkswagen Golf Service & Repair Manual: Heat always flows from warmer to colder material
Every material consists of a mass of moving molecules. The fast moving molecules of a warmer material loose part of their energy to slower molecules possessing less heat. This slows down the molecules of the warmer material and accelerates those with less heat. This continues until the molecules in both materials are moving at the same speed. They have the same temperature, and no further exchange of heat occurs.
Physical basics
The four known physical states of water also apply to air
conditioning refrigerants.
1 -
Gas (invisible)
2&nbs ...
Pressure and boiling point
The boiling points given in the table below are always based
on an atmospheric pressure of 1 bar. If the pressure on a liquid
is changed, its boiling point changes al ...
Other materials:
Round connector systems
Note
If necessary, any housing catches in place (secondary
locking mechanisms) must be released or removed prior to
disengaging the contacts using the prescribed tool
→ Chapter.
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Tyre lettering
Fig. 204 International tyre lettering
First read and observe the introductory information
and safety warnings
Tyre lettering (example)
Meaning
Brand name, logo
Manufacturer
Product name
Individual tyre lettering from manufacture ...
Notes on safety
Safety precautions during a road test using test
and measuring equipment
Risk of injuries due to unsecured test and measuring equipment
If a front passenger airbag is triggered during an accident,
insufficiently secured test and measuring equipment can becom ...
