Haze

When I look at my coins in capsules now in winter, a misty haze forms on the surface of the capsule (not inside!) which has to be wiped off. I have a question, is this harmful to the coins and why is this happening to me? From breathing? Is there any danger to the coins when they are inside the capsules? 

Again, the haze only appears on the surface of the capsule and not inside! Thank you!!

I would suspect that you are in high humidity environment and you store those capsules in location that is cooler than current temperature.

All of your coins in capsules or just some? What type of “haze” do you suspect it to be? Moisture?  What composition are the coins in the capsules? For silver for instance the temperature of the coin itself could be attracting moisture laden air towards it where the moisture is condensing on the capsule. Sounds like the capsule is doing its job and if so, it might have something to do with exactly where you are storing those capsules.

tokul

I would suspect that you are in high humidity environment and you store those capsules in location that is cooler than current temperature.

Yes, this, but I suspect the high humidity is mostly the OP's breath. Let the coins come to room temperature before handling.

Silver

I don't think composition will affect this at all.   The same would happen with empty capsules. They would just heat to RT faster.

Meantime he opened another thread for the same question without responding here.🙄 I was just curious about the compostions because of silvers superior heat conducting characterisatics compared to other metals and if he was witnessing the same or pronounced effect on different metals.

If you live permanently near coins, I think it will be a serious problem for your health.

But if it's what I think, and that you store coins at home where you don't spend them during the week because you're at school in another place and only come home occasionally or regularly for the weekend, then this is the result. During the week when you're at school, your room doesn't get hot, and I think it lives in the mountains.

For every building and inventory, constant temperature and ventilation are important. A large range of temperature differences can be seen when a person with prescription glasses enters a room with high temperature from outside. They do not see how they are fogged up, it is a sharp change in temperature on the lenses.

Ivan

harryg

Meantime he opened another thread for the same question without responding here.🙄 I was just curious about the compostions because of silvers superior heat conducting characterisatics compared to other metals and if he was witnessing the same or pronounced effect on different metals.

Went to work. Back now. As promised empty capsules. And yes, different alloys would have different heat capacities. Assuming two different alloys were brought to the same “cold” temperature then brought out to “room” temperature the one with the higher heat capacity would take longer to get to room temperature so the effect could look different between Cu-Ni coins and silver coins.