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.
The new white shirt under development will be the same design and pattern as the current green shirt but will have permanent military creases on the front and back. 1  55/45 percent polyester/wool serge, 9.5-10.5 ounce weight.  55/45 percent polyester/wool tropical weave fabric, 9.0 ounce weight.