Final answer:
False. A clean field does not necessarily require a clean paper towel. Other methods and materials can be used to create a clean field.
Step-by-step explanation:
False. A clean field does not necessarily require a clean paper towel. While a clean paper towel can be used to create a clean field, there are other methods and materials that can be used as well.
For example, in physics, a magnetic field can be created using a magnet. The field lines of the magnetic field can be visualized using iron filings or a compass needle. In this case, a clean paper towel is not necessary to create a clean field.
Therefore, the statement that a clean field can only be created using a clean paper towel is false.