Question

what can you say if your experimental is higher than your theoretical in physics lab? what are some of the physics used to explain this case?

Answer 1

In an experiment performed if we get the experimental values different from the theoretical value(true value) then this encorporates an error in the value calculated from the experimental data. The error can effect the value in two ways. Either it will add to true value of desired result or deducts from the true value. In our case if the experimental value is higher than theoretical which means that the error has been added. In the concept of physics we call this error as the noise of the system. This noise could be depending on the system under obsevation e.g in calculating the value of h(plank's constant) the experimental value comes higher as compared to the theoretical value. This is due to the thermal noise from the system (i.e the colour LEDs used).So to have the experimnetal value closer to theoretical we some times do noise subtraction also called background subtraction.