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\begin{document}

\title
{Measurement of the light pollution:
 a~project for the Grant Agency of the Czech Republic}
\authJHPPt
\date{March 28, 2002}

\maketitle

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\english

\subsection*
{Abstract}

The Czech Republic is on the verge: the light pollution will stop to grow
and will begin to diminish soon, thanks to the new Czech law protecting
the atmosphere against all sort of pollution, including ``artificial''
light. 

There is a~unique opportunity to document the reversal: the present
maximum of pollution and the positive effects of the future well aimed and
dosed lighting. Sky luminance in various locations and directions will be
measured, as well as the skyward light dispersion from the ground, in
various angles and with respect to the sources (direct or indirect).
Evaluation of luminances in settlements with glaring lighting and with
new, fully shielded one will be made. The study will provide data allowing
an exact judgement of the degree of reduction of the light pollution.  New
methods will be developed and published, enabling similar research
elsewhere.

\bigskip

\czech

\subsection*
{M��en� sv�teln�ho zne�i�t�n�: Abstrakt}

�esk� republika je na p�elomu: sv�teln� zne�i�t�n� p�estane r�st a~za�ne
se brzy zmen�ovat, d�ky nov�mu �esk�mu z�konu chr�n�c�mu ovzdu�� proti
v�em druh�m zne�i�t�n�, v�etn� ,,um�l�m`` sv�tlem. 

Je zde jedine�n� p��le�itost k~dokumentov�n� tohoto obratu:  sou�asn�ho
maxima zne�i�t�n� a~kladn�ch d�sledk� budouc�ho dob�e sm�rovan�ho 
a~d�vkovan�ho osv�tlov�n�. V~r�mci navrhovan�ho projektu bude m��en jas
oblohy v~r�zn�ch m�stech a~sm�rech, stejn� jako vzh�ru m���c� pozemsk�
emise, v~r�zn�ch sm�rech a~podle sv�ch zdroj� (p��m�ch a~nep��m�ch). Budou
vyhodnoceny jasy v~s�dlech s~oslniv�m a~naopak s~nov�m, pln� clon�n�m
osv�tlen�m. Tato studie tak poskytne exaktn� data k~objektivn�mu posouzen�
stupn� sni�ov�n� sv�teln�ho zne�i�t�n�. Budou vyvinuty a~publikov�ny nov�
metody, kter� umo�n� podobn� v�zkum realizovat i~jinde.

\end{document}
