>-----Original Message-----
>From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] 
>Sent: 02 March 2006 11:10
>To: Microcontroller discussion list - Public.
>Subject: Re: [EE] LEDs as lighting
>
>
>>>I have serious doubts that it does. After all a filament bulb is 
>>>essentially instant on anyway, it must take all of 100 mS to reach 
>>>full brightness, and fade again
>>
>>One argument would be that at 70mph you travel a bit
>>over 3 meters in 100ms, which is about one car length...
>
>To which my response would be - how many car lengths would you 
>travel in the human response time ?? It sort of swamps that ...

To which I would say the response time distance is immaterial, it can't be changed without e.g. avoidance radar etc.  The last 3 meters could be the difference between a scare and an accident, though probably not a very serious one.  In any case, it's a plausable benefit that you get for free from LED's, switching them on slowly would remove that for no obvious gain.

Regards

Mike


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