oh i see! Thank you very much for the info! By the way in the simulation, the value of the dc is 15V, where as the original one is 12v. Will it work the same by changing the R1 to 470k, and R2 to 50k?
Let's say that i was wrong about the values during bright and dark, how can i vary the values of R1,R2 when i measure the ldr values tomorrow? Should the value of R1 be higher than the resistance(dark) and R2 lower than resistance(light). Sorry for being so ignorant and shallow about the circuit.