Formula for calculating combined screen size of identical monitors

[Strawberry]

Hey,

I calculated this because I was interested then decided to post the formula I ended up with here in case anybody else could find use for it.

d2 = sqrt((n * sqrt(d^2 * w^2 / (w^2 + h^2)))^2 + (d^2 * h^2) / (w^2 + h^2))

where:

n = number of horizontal monitors (eg. 2)
d = the diagonal of each monitor (eg. 17)
d2 = the diagonal of all monitors combined
w and h = the aspect ratio (eg. 5 and 4 for 1280*1024 or 16 and 9 for 1920*1080)

In my case it's two 17" 5:4 monitors, so entering that into the formula looks like:

sqrt((2 * sqrt(17^2 * 5^2 / (5^2 + 4^2)))^2 + (17^2 * 4^2) / (5^2 + 4^2))

Simply entering that into google results in: 28.5947292
So that means 28.6" is the size of my combined display when using two 17" monitors.

Enjoy!

 

[monkeyspank]

Don't you have a ruler?

 

[Participant]

Don't you have a ruler?

Lol, but what use is a ruler when you're trying to work out the combined screen size of two screens that you don't own yet?

Personally I would just use this site: http://tvcalculator.com/ and work out the diagonal using pythagoras.

 

[Strawberry]

My formula is pythagoras, I s'pose entering it is a tad more complicated though.

I should make a javascript page like that for calculating the combined size.

 

[brad82]

Javascript is class

Give us a shout if you do do it mate

 

[seldNofSparta]

good god