[time-nuts] Remove Pictic boards from envelopes

[Steve Rooke]

On 11/08/2010, Jean-Louis Oneto <Jean-Louis.Oneto at obs-azur.fr> wrote:
> Nevertheless, there is a mention (with picture) of "mine de plomb" (="lead
> pencil") in the French version of Wikipedia:
> http://fr.wikipedia.org/wiki/Mine_de_plomb
> They were extensively used in Antiquity (Egyptians, Greeks and Roman).
> But I don't think they have RoHS compliant problems ;-}

But the real question is, did they used to have a nice little pink
useful eraser at the end of their pencils so they could clean up their
PCBs back then?

Steve

> Jean-Louis Oneto
>
> ----- Original Message -----
> From: "Alan Melia" <alan.melia at btinternet.com>
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Sent: Tuesday, August 10, 2010 11:12 PM
> Subject: Re: [time-nuts] Remove Pictic boards from envelopes
>
>
>> Hi Jim ...being "ironic"...see the "smiley"
>> Alan
>> ----- Original Message -----
>> From: "jimlux" <jimlux at earthlink.net>
>> To: "Discussion of precise time and frequency measurement"
>> <time-nuts at febo.com>
>> Sent: Tuesday, August 10, 2010 11:55 PM
>> Subject: Re: [time-nuts] Remove Pictic boards from envelopes
>>
>>
>>> Alan Melia wrote:
>>> > Pencil?? only us oldies know what that is....... it is surprising the
>> "lead"
>>> > pencil hasn't been banned under RoHS :-))
>>> > Alan G3NYK
>>> >
>>> >
>>>
>>> I don't know that "lead" (as in the element) has ever been used in
>>> pencils.. I read a fascinating book on the history of the pencil a few
>>> years back.. it described how graphite (the mines of Cumberland were
>>> famous for graphite with good writing/drawing properties) was called
>>> plumbago (lead ore) because chemical analysis didn't really exist and
>>> the dense black substance seemed to resemble lead.
>>>
>>>
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-- 
Steve Rooke - ZL3TUV & G8KVD
The only reason for time is so that everything doesn't happen at once.
- Einstein