How does one observe Lent? It differs from person to person and church to church, but some of the things Christians opt to do to observe Lent include: 1  On the first day of Lent (Ash Wednesday), some Christians mark their foreheads with ash as a symbol of sorrow and mourning over their sin.
An uncommon practice is to submerge the computer's components in a thermally, but not electrically, conductive liquid. Although rarely used for the cooling of personal computers, liquid submersion is a routine method of cooling large power distribution components such as transformers.
1 The Johnson digital controller is used to control the temperature of a refrigerator, or similar cooling or heating device. 2  Enter your desired temperature, called set point, and how tightly you want your temperature maintained, called differential, and let the controller do the rest. The Johnson digital controller is used to control the temperature of a refrigerator, or similar cooling or heating device. 2  Enter your desired temperature, called set point, and how tightly you want your temperature maintained, called differential, and let the controller do the rest.