My works coffee cup is one of those steel "Insulated" cups, its cold to the touch, mostly, but the coffee inside stays warm quite a while....
Does Styrofoam have the same effect?...
is there a plastic rim on it like the ones they have here, or is yours all metal? I understand there is a phenomenon where if you twist two hoses together and run cool water through one and warm water through the other, the pair will be perceived as hot. I'm curious if the same effect applies to the beverages.
I have different designs, but they all have a plastic inner sleeve that connects to the lid, with a closable spout you drink from, to help make them spill proof.
Your curiosity sort of gives me an idea.
you could put a cup in a bath of hot water to warm up the outside, then compare cool warm hot drinks with those on a cup that has a cold outside to see if there is a noticeable "Perceived" difference in temp?...
BTW, Noted, in hot summer, I keep a cool box with cold drinks in, and use my steel temp control cup to poor those drinks into.
The outside gets hot through the windshield, but the drinks inside keep cool... its better than an open can?...
I note that even though the cup is hot to the touch at times, the drink is still colder than you expect.
For info, Why steel?... an entertaining thought process look at this.
If you are ever tempted to buy one of these cups, drop the thing on the floor before you buy.
If the top flies off, put it back.
If it dents, same,.. if you think by looking at it it may be fragile, ie plastic, DONT buy.
Steel cups may take a slight dent but that doesnt harm them in any way...
Make sure its steel and not aluminium, you need weight with a low centre of gravity to keep it stood upright without tipping out of a cup holder on a sharp bend?..
Forget "Light", you dont need "Light" whats that all abut?.."light" as in aircraft build?.. you are on the ground, if you cant carry a cup, get a BLOODY SMALLER ONE, it doesnt need "Light" weight, it needs sturdy.. and Fragile?.. whats with that idea?.. when you have half-pint of scalding liquid within striking distance of your town-halls, you need to be able to trust it, so turn it upside down with liquid in and see if it leaks.
Well built is a MUST.
In truth, I have had one partially run over by a thankfully empty trailer without damage.
The steel ones may be expensive, but the ones I use now are over 5 yrs old and still working perfect... You needs to have a real good scrub with a good nylon scrubbing pad, or be able to split the inner plastic cup out and put that in a dishwasher every now and again, but its still good and perfectly clean/usable/germ free, all you need for that is to run boiling water over it before use every day after a good cleaning.
Do I trust those mostly cardboard and thin plastic cap things they give you at Take-out stores?...
Do I hell. Who cares what "Name" it has on it, I dont want it all over my Jacket and Trousers... if I buy one, it goes in my steel cup and I throw away the plastic/cardboard right away.
Dont care, my Steel "Has had a life" cup holds more kudos than any badge you want to put on any cup, the smell of fresh roast coffee is enough to say I have quality here, if that isnt enough, you dont like coffee that much.
I also know places that will dispense into my travel cup without question.... bring your own is sometimes cheaper as well... being they top up to the brim.
