Vacuum packing preventing the evaporation of volatile components. It is also commonly used to store dry foods over a long period of time, such as cereals, nuts, cured meats, cheese, smoked fish, coffee, and potato chips (crisps). On a more short term basis, vacuum packing can also be used to store fresh foods, such as vegetables, meats, and liquids, because it inhibits bacterial growth. Vacuum packing greatly reduces the bulk of non-food items. For example, clothing and bedding can be stored in bags evacuated with a domestic vacuum cleaner or a dedicated vacuum sealer. This technique is sometimes used to compact household
Packing dimension packing dimensions of the set formula_15 are given respectively by: It follows easily that given numbers formula_20, one can choose a sequence formula_4 as above such that the associated (topological) Cantor set formula_15 has Hausdorff dimension formula_23 and packing dimension formula_24. One can consider dimension functions more general than "diameter to the "s"": for any function "h" : [0, +∞) → [0, +∞], let the packing pre-measure of "S" with dimension function "h" be given by and define the packing measure of "S" with dimension function "h" by The function "h" is said to be an exact (packing) dimension function