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.
Before refrigeration air conditioning was invented, cooling was done by saving big blocks of ice. When cooling machines started to get used, they rated their capacity by the equivalent amount of ice melted in a day, which is where the term âtonâ came from sizing air conditioning.