hanging drop tecnique have practical value
hanging drop tecnique have practical value
If you mean 'pi,' the value of pi necessary for almost all practical mathematics is: 3.14159265 Further than that is only necessary for very delicate geometry and physics.
pie
A common belief or practice which may or may not be true or have practical value could be called a tradition or a custom.
It is essentially a scientific toy, with no practical value.
maybe
A common practice which may or may not be true or have practical value is called tradition. Another word to describe it may be custom.
Giving something value that has very little practical value. devalues thing that have real value.
very practical
Something that is particularly practical
If it has been going a long time, then a common belief or practice which may or may not be true or have practical value could be called a "tradition" or a "custom."