Pi is an irrational number (meaning the digits never end or have a repeating pattern) that is the ratio of the circumference of a circle to its diameter...this ratio is a constant for any circle, regardless of size.
The universal recycling symbol (U+2672 â² universal recycling symbol or U+267B â» black universal recycling symbol in Unicode) is an internationally recognized symbol used to designate recyclable materials.It is composed of three mutually chasing arrows that form a Moebius mÃ¶bius (strip an unending-single sided looped). surfacehe recycling symbol is in the public domain, and is not a trademark. The Container Corporation of America originally applied for a trademark on the design, but the application was challenged, and the corporation decided to abandon the claim. As such, anyone may use or modify the recycling symbol, royalty-free.
2. Learn how to glue plastics marked 6. A recycling symbol containing a 6 or PS signifies the plastic type polystyrene. This is best glued with a poly cement (also called plastic cement), or a specialized plastic glue such as Loctite Epoxy Plastic Binder or Super Glue Plastic Fusion.Other adhesives that will work include a cyanoacrylate (also called instant glue or cyano), or an epoxy.. Learn how to glue plastics marked 6. A recycling symbol containing a 6 or PS signifies the plastic type polystyrene. This is best glued with a poly cement (also called plastic cement), or a specialized plastic glue such as Loctite Epoxy Plastic Binder or Super Glue Plastic Fusion.