I have just purchased an Xbox 360 Video Game Disc, Call of Duty : Modern Warefare 3 to be exact, from the USA and they will be sent to me here in Brazil and It cost me 30$.15$ for shipping, and 15$ for the actual item (USD).I wanted to know, will I have to pay a customs charge to get these items here or is there a possibility I won't have to?If I do how much would it cost me, and will I be asked to pay for it through the phone, or at my door?PLEASE help me as I desperately need to know.Thanks!
If they're code, then yes. Phone any fire department and ask. They can tell you.
To add to Charcind's good answer You will not find any type of polymer nor any type of glass that withstands 2500F (almost 1400C). You will need a material like saphire (pure Al2O3). Although, depending on what you are trying to do any material at this temperature will be glowing bright red just due to the temperature so the transmission of some parts of the EM spectrum will be affected. Most ceramic floor tiles are NOT designed to function at 2500F and are not completely free of pores. Finding adhesives that will provide an airtight or pressure tight seal at 2500F is, as we say, non-trivial. Highly reflective mirrors Good mirrors are made using silver on glass. Silver is the most reflective surface we know of for the visual spectrum. If you are interested in a different or wider spectrum, you will need to do some research. It is obvious from your question that you are doing engineering design without any fundamental understanding of material science. Do not feel bad, this is a common situation (and is why material scientists generally have very good consistent employment opportunities). In fact, if you look at almost any technology we have today, the performance of that technolgoy is absolutely limited by the materials we have available. Consider for example: internal combustion engines, jet engines, anything using a permanent magnet, all semiconductor devices, photovoltaic cells, batteries, and the list goes on.
