Calc Portal - Chell shoots the Moon

6:02



Chell creates a portal to the moon to defeat Wheatley. The speed is straight forward; the distance to the Moon is 384,400km.


Timeframe is 3.53 seconds.

T = 384,400km/3.53s
= 108895184/299792458 X 100
= 36.3235235% C

Not only does it reach the Moon in seconds, but there's a visible flash of light when it does. Though the portals themselves are safe, GLaDOS has this to note on the portal gun in the first game...

GLaDOS: Very good! You are now in possession of the Aperture Science Handheld Portal Device. With it, you can create your own portals. These intra dimensional gates have proven to be completely safe. The Device, however, has not. Do not touch the operational end of The Device. Do not look directly at the operational end of The Device. Do not submerge The Device in liquid, even partially. Most importantly, under no circumstances should you [????].

Click to expand...

The diameter of the Moon is 3,475km.
236 pixels = 3475km
1 pixel = 3475km/236 = 14.7245763km
14.7245763km X 30 = 441.737289km (444737.289m)
444737.289m/2 = 222368.644m

It's a whiteout in the area, so we'll use the luminousity of the Sun. The luminousity of the Sun is 100,000 lux. The conversion factor from lux to apparent magnitude is -2.5 log I - 14.2.

L = -2.5 log I - 14.2
= -2.5 log 100,000 - 14.2
= -26.7

M(star) is the apparent magnitude of the light source
m= is the apparent magnitude of the sun (-26.73)
L(star) is the Luminosity
L= Luminosity of the sun (3.486*10^26)
d= Distance to the sun from earth (0.000004731537734207877 parsecs)
d(star)= distance to the light source

Click to expand...

-26.7 = -26.73 - 2.5log((L/3.846*10^26)(146000000000/(222368.644))^2)

Going through this step by step as per always...

(146000000000/(222368.644))^2) = 4.31080736e11
-26.7 - -26.73 = 4.31080736e11/((L/3.846*10^26)
0.03 = -2.5Log(4.31080736e11/((L/3.846*10^26))
0.03/-2.5 = (4.31080736e11/((L/3.846*10^26))
10^(-0.012) = (4.31080736e11/((L/3.846*10^26))
0.972747224 = (4.31080736e11/((L/3.846*10^26))
0.972747224 X (3.864*10e26) = 4.31080736e11
3.75869527e27/4.31080736e11 = 8.71923739e15 joules = 2.083947750956022915 megatons

Final Results
Portal gun speed = 36.324% C
Portal gun's energy = 2.084 megatons