Energy which is transferred due to a temperature difference is sometimes known as heat or heat energy (or even thermal energy, although this is not a standard term). Conduction is sometimes described as a thermal energy transfer. You will have to decide if any of these terms are appropriate to your own scheme of work.
American Express TrueEarnings Card from Costco: allows you to earn cash back on eligible items NOTE: please visit the site directly for more details, verification and information. As of 2014 they have over 107 million active cards.
Originally Answered: Why does American Express (company) use a different grouping of numbers than other credit cards? Visa and Mastercard always have 16 digits whereas American Express has 15 digits. Visa and Mastercard do not issue credit cards; instead, they use banks (financial institutions) to issue the cards.