Questions & Answers
A question may be either a linguistic expression used to make a request for information, or else the request itself made by such an expression. This information may be provided with an answer. An answer is a reply to a question or is a solution, a retaliation, or a response that is relevant to the said question.
Who invented the alarm clock?
The first mechanical alarm clock was invented by Taqial-Din of the Ottoman Empire in 1559...
Science & Mathematics > Physics
Ottoman Empire > China