For the quintessence of classical philosophy, see Aether (classical element). Boron is a chemical element with symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element in the Solar system and in the Earth's crust.
The weight of a polo shirt depends on the size and fabric. The  average weight for a men's short-sleeved polo shirt in size large  is about 8 ounces.1 person found this useful.ow much does a medium sized t-shirt weigh?   On average: Small: 6 oz. Medium: 6.5 oz Large: 7 oz X-Large 7.50 2X-Large 8.75 3X-Large 9.50 But it can vary depending on material.
Although these four fabrics are some of the most popular materials for polo shirts, they are not the only ones. Materials such as jersey and ottoman are also used for polo shirts. Many fabrics overlap as well. For example, pique piquÃ© is a type of, cotton but it is woven. differently