Physical size 20" ws

adren · 30 Dec 2006 at 11:55

Hey, would anyone be able to tell me the actual viewable screen w x h of the 20" WS models like the Belinea, just want to get a rough idea of the screen size compared to my current 19" CRT. Thanks a lot!

Kreeeee · 30 Dec 2006 at 12:58

adren · 30 Dec 2006 at 12:59

I know, but 20" doesnt give me the width and height, i guess i could work it out by the aspect ratio?

squiffy · 30 Dec 2006 at 13:04

435mm x 272mm (actual image size)

adren · 30 Dec 2006 at 13:06

Thank you

Sherwood · 30 Dec 2006 at 13:06

Rough guestimate (ok I was bored and got the tape measure out) my Samsung 205BW measures (W x H) 435mm by 270mm

Sherwood

fish99 · 30 Dec 2006 at 13:14

Roughly 432 x 270 mm here, Dell 2007WFP. An easy way to think about it is same height as a 19" CRT (roughly) but with an extra 4 cm on either side. Nevertheless it feels bigger than that somehow.

adren · 30 Dec 2006 at 13:16

Yes it is exactly same height as my current diamond pro 920, thats good to know i wont lose any height if i go 20" wide.

Kreeeee · 30 Dec 2006 at 13:23

fish99 · 30 Dec 2006 at 13:29

Kreeeee said:
It can be easily worked out using pre-GCSE geometry, knowing the horizontal:vertical ratio as being 16:9 and the hypotenuse being 20".

Yep, that method gets me 431 x 269 mm (PC widescreens are 16:10).

Atomic · 30 Dec 2006 at 13:36

So a 20 inch monitor would be bigger than a 17 inch crt screen height and width? Hmm, now I may go for 20" instead of 22 lol

adren · 30 Dec 2006 at 18:03

How do you work it out using a ratio instead of knowing the length of another side? *wonders how he passed maths gsce years ago*.

fish99 · 30 Dec 2006 at 22:02

You only need the length of the hypoternuse (20", x2.54 for cm) and the angle, which you use the aspect ratio to calculate, using an inverse tangent. So in the case of a 16:10 widescreen, you do inv tan ( 10 / 16 ) which gets you the angle (32.0 degrees), then it's just cosine or sine of that angle multiplied by the hypoternuse (20 inches) for the two sides you want.

You need to do some simple rearranging of the trig equations to get to that point. You'll remember SOH CAH TOA, so Sin (angle) = Opp/Hyp, Cos (angle) = Adj/Hyp and Tan (angle) = Opp/Adj. Those are rearranged to Opp = Sin (angle) * Hyp and Adj = Cos (angle) * Hyp, in both cases both sides of the equations have been multiplied by Hyp, and finally angle = inv tan ( opp/adj ) where inv tan has been applied to both sides.

Atomic/
Yep, taller and much wider than a 17" CRT (which are 16" visible). Slightly taller than a 19" CRT. Same height as 17" TFT.