Typically speaking, using regular notebook paper and a single envelope, 4 to 5 sheets of paper can be mailed while staying under 1 ounce. The United States Postal Service charges one stamp per ounce...
There are several types of evidence that may be used in a court setting. Evidence can be direct or circumstantial. Direct evidence is the items in a court case that can be seen or certain types of eyewitness testimony. Circumstantial evidence is usually a series of events or characterization that implies guilt. All the facts that are collected for a court case are tied together to help a judge or jury make a decision to convict or not to convict someone on trial.
The law of evidence is also concerned with the quantum (amount), quality, and type of proof needed to prevail in litigation. The rules vary depending upon whether the venue is a criminal court, civil court, or family court, and they vary by jurisdiction.