System whose domain is not in time can be a time invariant system.
Ex: taking photo to a fixed object.
here domain is not in time so photo wont change with time
Useless is a non-example of practical.
Oh yes, the metric system is extremely practical.
A practical example is it's the reason the sky is blue.
the first practical radio signal system is Jan Hendrix Campos
example report practical training in business administration
example of practical application/technologies using Einstein's Theory
water expansion is an example
Practical function refers to the specific purpose or role that a particular object, system, or process serves in real-world applications. It emphasizes usability and effectiveness in achieving desired outcomes or solving problems. For example, the practical function of a tool is to assist in completing a task efficiently. Ultimately, understanding practical function helps in designing and optimizing solutions to meet user needs.
It is practical. It is based on 100 so all the numbers fit in nicely with the western world's 10 base number system.
Francium hasn't practical uses.
One example of sound wave absorption in a practical setting is the use of acoustic panels in recording studios to reduce echoes and improve sound quality.
horse power