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.
Polo players Paul Barry, Vichai Srivaddhanaprabha, Adolfo Cambiaso, Martin Valent with fellow player Prince William (center), wearing polo shirts as part of their uniform. Before Lacosteâs 1933 mass-marketing of his tennis shirt, polo players wore thick long-sleeve shirts made of Oxford-cloth cotton.olo players Paul Barry, Vichai Srivaddhanaprabha, Adolfo Cambiaso, Martin Valent with fellow player Prince William (center), wearing polo shirts as part of their uniform. Before Lacosteâs 1933 mass-marketing of his tennis shirt, polo players wore thick long-sleeve shirts made of Oxford-cloth cotton.