Correct webaddress for coke can reflection

[Ben]

Hi David

Here's my two cents:

I guess the negative effect is due to specular vs. diffuse reflection.

The metallic red Coke can reflects the light from the window specularly 
and projects the curved red image on the desk. The white lettering 
reflects diffusely, so the letters show up as voids in the reflected 
image. The light is reflected everywhere evenly, so it cannot project an 
image.

I'm out of the country right now but I think that NZ coke cans have a 
thin outline of bare Aluminium around the white lettering, which 
reflects specularly and shows up as a bright outline.

I hope this helps
Ben

David King wrote:
> Denis,
>
> OK -I'm probably the only one who hasn't a clue.
>
> Could you give me a clue?
>
> Cheers
>
> David King
> Physics HoD
> Christ's College
> Private Bag 4900
> Christchurch
> New Zealand
>
>
>
>
> On 28/06/2008, at 11:23 PM, Denis Burchill wrote:
>
>> Sorry,
>>
>> the correct address is
>> http://home.clear.net.nz/pages/d.burchill/CokeCan.html
>>
>> Cheers,
>> Denis.
>>
>>
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