OOP Spoiler - Question about ch1

[Serena Moonsilver]

--- In HPFGU-OTChatter at yahoogroups.com, "Camille" <cbeme001 at y...> 
wrote:
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> Ok, in chapter 1 when the Dementers came after Harry and Dudley, 
> Harry said the Lumos spell while looking for his wand. The wand lit 
> enabling him to fine it nearby. If one can't do magic without a 
wand 
> why did the spell work while Harry wasn't holding his wand? Was it 
> because it was nearby? I need ideas... anyone?
> 
> CBeMe

Actually, if you read it carefully, he's groping around on the ground 
looking for it and finds it--or at least that's what's implied.

What I want to know is why this wasn't mentioned amoung the charges 
at his trial later.