Jewellery

One universal issue is control over who could wear what jewellery, a point which indicates the powerful symbolism the wearing of jewellery evoked. In ancient Rome, for instance, only convinced ranks could wear rings; later, sumptuary laws dictated who could wear what type of jewellery; again based on rank. Cultural dictate have also played an important role; for example, the wearing of earrings by Western men was considered "effeminate" in the 19th and early 20th centuries. on the other hand, the jewellery industry in the early 20th century launched a crusade to popularize wedding rings for men — which caught on — as well as appointment rings for men , going so far as to make a false history and claim that the practice had Medieval roots. By the mid 1940s, 85% of weddings in the U.S. feature a double-ring ceremony, up from 15% in the 1920s.Religion has also played a role: Islam, for instance, consider the wearing of gold by men as a social taboo, and many religions have edicts against extreme display.

Compact Disc

A Compact Disc or CD is an optical disc meant to store digital data, initially developed for storing digital audio. The CD, obtainable on the market in late 1982, remains the standard physical medium for commercial audio recordings as of 2007. An audio CD includes one or more stereo tracks stored using 16-bit PCM coding at a sampling rate of 44.1 kHz. Standard CDs include a diameter of 120 mm and can hold about 80 minutes of audio. There are also 80 mm discs, occasionally used for CD singles, which hold around 20 minutes of audio. Compact Disc technology was afterward modified for use as a data storage device, known as a CD-ROM, and it consist of record-once and re-writable media (CD-R and CD-RW respectively). CD-ROMs and CD-Rs stay widely used technologies in the Computer industry as of 2007.

Seedless fruits

Seedlessness is a significant feature of some fruits of commerce. Marketable cultivars of bananas and pineapples are examples of seedless fruits. Some cultivars of citrus fruits especially navel oranges and mandarin oranges, table grapes, grapefruit, and watermelons are appreciated for their seedlessness. In some type, seedlessness is the result of parthenocarpy, where fruits set without fertilization. Parthenocarpic fruit set may or may not need pollination. Most seedless citrus fruits need a pollination stimulus; bananas and pineapples do not. Seedlessness in table grapes consequences from the abortion of the embryonic plant that is fashioned by fertilization, an occurrence known as stenospermocarpy which requires normal pollination and fertilization.

UMPCs

These Ultra-Mobile PCs are mobile computers with a size comparable to PDAs - they are tremendously portable. Because of their small size, they slot in a 20 cm (7 inch) or smaller touch-screen for the user to interrelate with it (as with a virtual keyboard), though some (such as the OQO Model 02) are planned with a miniature physical keyboard (a thumb board) and mouse interface. They residence lower performing, power-saving components (in comparison to larger laptops). Some of the Examples of UMPCs are the OQO Model 02 and the Sony Vaio UX Micro PC.