XPost: uk.d-i-y, alt.home.repair, alt.sci.physics   
   From: me@privacy.invalid   
      
   "Commander Kinsey"  wrote in message   
   news:op.z87a1eyjwdg98l@picard.lan...   
   > On Sat, 05 Oct 2019 19:46:08 +0100, Mark Lloyd  wrote:   
   >   
   >> On 10/4/19 2:51 PM, Commander Kinsey wrote:   
   >>>> bulb (60W equivalent) in a lamp here.   
   >>>   
   >>> 60W?  Are you a Klingon and love darkness?  I use 100W and 150W bulbs   
   >>> only.  And lots of them.  My living room (7 metres by 4 metres) contains   
   >>> 13 90W bulbs.   
   >>   
   >> It also matters if the light source is in the right place, like from   
   >> behind is good if you're reading or watching TV.   
   >   
   > I prefer the whole room to be evenly lit.   
   >   
   >> Some people think more light is always better. I remember working behind   
   >> a TV (26-inch CRT console), where I could see OK. Then someone, trying   
   >> to be helpful, turned on a nearby wall lamp. The effect of that is that   
   >> the area behind the TV became completely BLACK.   
   >   
   > More light is better if the whole room is lit evenly.  Which is why I   
   > prefer strip lights to point sources.  Much better if you're soldering for   
   > example, you don't create shadows, as light can come to the workpiece from   
   > all angles, no matter where your body/head/hands/tools are.   
      
      
   Exactly. It is the use that you are making of the light which governs   
   whether you want a point source and directional lighting, or a diffuse   
   light.   
      
   I prefer to read with a light over my shoulder to light the pages of the   
   book, but with the rest of the room dark enough than I'm not distracted by   
   everything else around the book. Likewise for watching TV - screen brighter   
   than ambient light, even if the ambient light isn't reducing screen contrast   
   by brightening the dark parts of it.   
      
      
   My wife prefers uniform lighting - even if that means you are looking into   
   the light. When reading in bed, she will turn on the overhead light (single   
   ceiling rose or lots of GU10 spotlights) which illuminate the rest of the   
   room and shine right in your face, but leave the pages of the book in   
   shadow, She believes that reading by over-the-shoulder light, with the book   
   brighter than the background, strains your eyes.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)