Refraction represents a change in the direction of propagation when beams of light encounter a medium with a different density.
Reflection is the return of light to the medium it came from when it encounters a mirror.
Answer:
B
Explanation:
B. smart cards
yes
where's our question
Open source software
Open source software is exactly what you think it is, the code to compile the software and run it is available to the public for use or modification.
Answer: It is beautiful
