What is a Nortek Light?

are you sure you have the correct name?

any how nortek lights are  pretty much every where nowadays if you have a wireless device. key board mouse even tvs and cameras see that light on the bottum of your wireless mouse thats a nortek

hope this helps

the one I am familiar with can be seen here notek light

http://www.google.com/images?um=1&hl=en&rlz=1T4GGLL_enUS314US314&biw=1003&bih=596&tbs=isch%3A1&sa=1&q=notek+light&aq=f&aqi=&aql=&oq=&gs_rfai=

Notek,

So now I know how to spell it , do you know how it works?

Low light, indirect lighting.

Here's the most recognized..........

.............fairly self explanatory.

The rear lights (below) were used mostly for estimating/judging distance behind vehicles at night.

All of the Notek lights were designed to be used under black-out restrictions...so the indirect lighting/hooded light concept was essential for the front light when the standard/main lights couldn't be used to avoid being spotted from ground or aerial observers. The rear lights were used to maintain proper vehicle spacing at night under similar black-out conditions and worked on the concept of optical convergence at different distances to achieve that which is why the rectangular style light has 4 windows but the sizes of the windows are different. Depending on how far away from the light you were dictated what pattern of the 4 windows you saw and provided a constant frame of reference to avoid vehicles ramming into each other in the dark.  

When following another vehicle in blackout drive, you try to see only 2 lights. If you see only 1, you are too far away and if you see all 4, you are too close.