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.
Re: how much does a t-shirt weigh? It will differ since (for example) the fabric AA uses is 4.3oz, vs. a Hanes Beefy 6.1oz (and AA using slightly less fabric per shirt than Hanes since their sizing is smaller) - so the Hanes should weigh about 50% more than the AA (can't say I've actually checked).t will differ since (for example) the fabric AA uses is 4.3oz, vs. a Hanes Beefy 6.1oz (and AA using slightly less fabric per shirt than Hanes since their sizing is smaller) - so the Hanes should weigh about 50% more than the AA (can't say I've actually checked).