Cups with white insides

@shelagh77 (3643)
April 6, 2007 7:43pm CST
Why do manufacturers insist on making tea and coffee cups with dark or patterned outsides but plain white glazed insides which show every little mark? And who do people who refuse to wash up regularly always seem to buy and use these cups - ewwwwww!
1 person likes this
1 response
@coolricky (137)
• India
7 Apr 07
tea or coffee are hot drinks and should be kept hot till the last sip to maintain their taste. Now white surfaces are believed to reflect light while black absorbs heat radiations. If the inner walls of the cup are designed white, then it helps in retaining the heat of the drink by not allowing the heat radiations to escape through. while black surface continuously absorbs heat of surrounding and helps maintaing the temprature of the surfsce of cup
1 person likes this
@shelagh77 (3643)
8 Apr 07
Wow! Thank you! That is incredibly clever, isn't it? I still don't want to drink out of some cups in some places, but Other Half says from now on it is black on the outside and white on the inside for him as he likes his tea piping.