When can you use a Gaussian surface?
I'm trying to understand the conditions or scenarios where it would be appropriate to use a Gaussian surface. Can someone explain when and why we would choose to use this concept?
When does a coin have a medal alignment?
I'm wondering about the conditions under which a coin would exhibit a medal alignment. Specifically, I'd like to know when and how this particular alignment occurs in coins.
When were elongated coins invented?
I'm curious about the origin of elongated coins. Specifically, I want to know when these unique and interesting coins were first invented.
When were German coins minted?
I'm wondering about the history of German coins. Specifically, I want to know when German coins were first minted. Can anyone provide information on this or point me to relevant resources?
When did the five peso coin become obsolete?
The user is inquiring about the date when the five peso coin became obsolete, seeking specific information on the coin's discontinuation from circulation.