A technique they use to create that 3D-looking effect is called parallax panning or something like that. It moves two layers in opposite directions at different rates as well as using depth-of-field to create the illusion of 3D.
Now, assuming that Celestia is giving the friendship test to see if Twilight has in fact been doing her job (I think Celestia wouldn't need to even have her take a test, in my opinion), then how do you think Celestia will react if Twilight fails?
I think she was saying how easy it was for her to do levitation. You saw her repeated teleports in the song, her magic talent is indisputable. Her mind is also very sharp, as shown by that impressive recital of that obscure square root. Honestly, I'm not sure what test she could fail...
Ha, like we haven't already broken the universe with ponies? Ahem, no. This makes sense if you think about it, it's just changing light's speed to create a hole. Also, we need Starswirlthebearded's wisdom in here. xD
Well, dropping the Kobayashi Maru scenario, any theories on what is happening in that episode? She's in Canterlot, but what test did she fail? It might be a school entrance examination, but that would mean leaving Ponyville and her friends...
Haha, well then I was correct, this will consume a whole lot of power to operate, and only for 40 trillionths of a second! If they mature the device, I don't think they're going to want to carry around a nuclear reactor to power it...
Of course, the Kobayashi Maru! Next, Twilight would try and alter the test to make it indeed possible, mirroring Captain Kirk's own actions. But she'll probably get caught, of course.
Wow, this is amazing! Practical uses for this could be limitless. Technology is advancing so fast... The next step is to prolong the effect of course. But this invention seems like it would take a lot of energy to work, making it difficult to make it portable.
Ah, I'm just so excited for season 3! Many bronies probably said that exact same thing about season 2 last year... now I get to experience the anticipation! It's killing me.