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Re: Quid des ampoules LED retro ?



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vu de loin, en moyenne sur tous les groupes, le rapport signal/bruit de  
Usenet est faible... En fait il faut bien choisir ses groupes ;-)


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LL
  ?? ???? ??? ????? ???? (????????)

Re: Quid des ampoules LED retro ?

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Oui, surtout l'arborescence "sci".




Re: Quid des ampoules LED retro ?


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effectivement...





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ordre de grandeur statistique :
"0,1 nm : ordre de grandeur du rayon d'un atome...
1 nm : ordre de grandeur de la distance interatomique dans un cristal  

https://fr.wikipedia.org/wiki/Ordres_de_grandeur_de_longueur



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d'onde sont transparents", c'est vrai en physique classique mais  
inapplicable en quantique.

Re: Quid des ampoules LED retro ?




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Merci pour ces liens.

J'ai pas tout compris :-)
Et au lieu de clarifier la physique en rajoute une couche en changeant


l'optique.
C'est pas bien malin :-)




Re: Quid des ampoules LED retro ?



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en faire; elles coutent bonbon: serres agricoles, cabines de bronzage).

NB: certains animaux ont une vision en UV moyens (certaines crevettes), ou


cet UV).


produire par LEDs blanche, produisent une fatigue rapide, mais variable


blanches jouent sur cette limite ...




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chinoises - suis pas raciste, mais blanc du nord, et issu d'un milieu








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Et
j'ai lu des choses contradictoires:









francs, et transposent plus ou moins correctement leur spectre vers le



sait faire un filtre de transposition qui laisse <0.01% d'UV; en pratique,




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If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Quid des ampoules LED retro ?





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Autant je suis parfaitement d'accord avec ta comparaison 50Hz vs frittes ...



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gluten-lactose. Et j'en ignore probablement 95%. Depuis 50-100 ans on a











exemple illustratif ... en plein dans le sujet: en 2010 on nous a interdit


sait que les TFC contiennent du mercure, et sont polluants; ils sont un





stupide, en son temps.



me fous de consommer et rejeter quelques grammes de mercure, si mon
ampoule peut durer 100 ans)






Parce qu'il y a une technologie scientifiquement passionnante, qui aurait













Je n'ai rien contre la recherche. Je n'ai rien contre polluer "un peu". Si



http://www.darwinawards.fr/ ).

--  

If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Quid des ampoules LED retro ?


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Bonjour / Bonsoir
(rayer la mention inutile)

Ca fait pas loin de 2000 ans ...


vols) des ponts-siphon des aqueducs romains ...






avoir bien d'autres (et j'habite le 59, mais je ne connais pas grand  
chose par ici)

--  
Amicalement

Bernard

Re: Quid des ampoules LED retro ?
On 13/04/17 12:55, Lucas Levrel wrote:













dans le domaine alimentaire; mais c'est hors sujet.





vitesse de rotation pour ouvrir un trou de verre. Leur adaptation incluait








reproduction sur place; tous les sujets introduits meurent; les migrations


territoriale; certaines pourraient y survivre rapport aux radiations mais




--  

If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Quid des ampoules LED retro ?




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d'un point de vue risque EM ils sont mieux).








EM. A TORT.










sans ma main, aucune douleur.







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If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Quid des ampoules LED retro ?

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Non, c'est fait par construction pour provoquer le renouvellement des


--  
Quand on voit c'qu'on voit, puis qu'on entend c'qu'on entend, on a
raison d'penser c'qu'on pense
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Re: Quid des ampoules LED retro ?
On 10/04/17 01:19, Jo Kerr wrote:




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https://www.drgoulu.com/2011/10/16/la-veritable-histoire-de-lampoule-de-livermore/#.WOs5C9VPFp0

--  

If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Quid des ampoules LED retro ?

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luminaires avec ventilateurs (donc avec vibrations plus intenses que les



Michel

Re: Quid des ampoules LED retro ?


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Arte, avant 05/2012 (date de l'enregistrement sur mes DD). Et dure 1H32.
Toute cette organisation, avec photos et bouts de films, montre bien la

Michel

Re: Quid des ampoules LED retro ?



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On retrouve ce film sur Youtube:

https://www.youtube.com/watch?v=Y_fHAIfoqcQ

Michel

Re: Quid des ampoules LED retro ?


?. J'ai lu un

e de 1000h;



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s

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de-livermore/#.WOs5C9VPFp0
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haine

 et montrant la



ythe,


 ces

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es

tre

. Et avec

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.


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jours sur ma mobylette bleue :)


Re: Quid des ampoules LED retro ?



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Bonjour / Bonsoir
(rayer la mention inutile)








--  
Amicalement

Bernard

Re: Quid des ampoules LED retro ?


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Michel


Re: Quid des ampoules LED retro ?
On 10/04/17 11:11, Michel MARTIN wrote:

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ampoules dont on parle ... une par une: et faudra parler de leur

produite).

J'ai un ami qui bosse dans le spectacle, et depuis toujours ils utilisent





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If computing were an exact science, IT engineers would'nt have work \_o<

"So all that's left, Is the proof that love's not only blind but deaf."
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Re: Quid des ampoules LED retro ?

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Les ampoules, on sait les fabriquer pour qu'elles durent longtemps.

les radars, on mettait des ampoules dont les filaments sont tenus par
plus de supports (3 ou 4 sur une simple ampoule, une dizaine sur les

se balancent ou tournent. Tout comme les ampoules pour les fours et les

"mieux" soutenu.

"moindre" (moins de changement qu'avec de simples ampoules).





Michel




Re: Quid des ampoules LED retro ?
Le Tue, 11 Apr 2017 12:44:42 +0200,

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    tricolores. Rendement moisi, mais increvables.

    JKB

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