AZ ELEKTROM�GNESES T�RER� M�R�SE �JVID�K TER�LET�N
Szerz�: S�TI Gergely, III. �vfolyam
T�mavezet�: Dr. BIKIT Istv�n egyetemi tan�r
Int�zm�ny: �jvid�ki Egyetem, Term�szettudom�nyi Kar, Fizikai Int�zet,
Vajdas�gi Magyar Fels�oktat�si Koll�gium

Mint minden �l� szervezetre, az emberre is hat�ssal van az elektrom�gneses mez�. Ez a hat�s nagy m�rt�kben f�gg a mez� frekvenci�j�t�l �s intenzit�s�t�l. Urb�nus k�rnyezetben az elektrom�gneses mez� t�bb egym�st�l f�ggetlen forr�sb�l ered, �gy nagyon neh�z megbecs�lni intenzit�s�t.
A munka keret�ben �jvid�k ter�let�n t�bb, mint 60 pontban jegyezt�k fel az elektrom�gneses mez� intenzit�s�nak maximum�t. A m�r�sek mind szabadban k�sz�ltek. A folyamat sor�n egy k�zi m�szert alkalmaztunk (EM Eye CTM045), ami cs�cs�rt�k �zemm�dban 10 m�sodpercig m�r, majd a legmagasabb detekt�lt �rt�ket mutatja ki. A k�sz�l�k ir�ny�tott antenn�val rendelkezik, ez�rt minden pontban 4 m�r�st v�gezt�nk a n�gy vil�gt�j ir�ny�ban. A t�bl�zatba ezeknek az �rt�keknek az �sszege ker�lt, mivel f�ggetlen forr�sok eset�ben az interferencia elhanyagolhat�. Ezenk�v�l azokban a pontokban, ahol magas az elektrom�gneses t�rer� intenzit�sa, a domin�ns frekvenci�t is feljegyezt�k.
Az adatok ki�rt�kel�se folyam�n a hangs�ly a mobiltelefon-h�l�zat hat�s�ra ker�lt, viszont a m�rt �rt�kek nem mutatnak �sszef�gg�st a b�zis-, illetve �tj�tsz��llom�sokkal. A gy�rak hat�sa �gyszint�n elhanyagolhat�.

Kulcsszavak: elektrom�gneses t�rer�, m�r�s

MEASUREMENT OF THE ELECTROMAGNETIC FIELD ON THE TERRITORY OF NOVI SAD
Author: Gergely S�TI, IInd year
Mentor: Dr. Istv�n BIKIT, university professor
Institution: University of Novi Sad, Faculty of Natural Sciences, Institute of Physics
Hungarian College for Higher Education in Vojvodina

The electromagnetic field affects every living organism, so does the humans. The effect depends on the frequency and intensity of the field. In urban areas the electromagnetic field is created by multiple and independent sources, so the estimation of its strength is unfeasible.
On the territory of Novi Sad the maximal values of the electromagnetic field were measured in more than 60 different locations. All the measurements were carried out in the open. For the measurements a handheld device (EM Eye CTM045) was used. In the peak mode the device records the maximum intensity of a 10 second interval. The instrument is equipped with a directional antenna, therefore on all the locations 4 measurments were made, in the directions of the four cardinal points of the globe. The sum of these values were entered in the table, because the interference of independent sources is neglectable. In the location with strong electromagnetic field, the dominant frequency was also measured.
During data processing the emphasis was put to the effect of the cellphone network. The results, however, do not show correlation between the base and relay stations and the strong electromagnetic field. The effect of factories is also neglectable.

Keywords: electromagnetic field, measurement

MERENJE ELEKTROMAGNETNOG POLJA NA TERITORIJI NOVOG SADA
Autor: Gergelj �oti, II godina
Mentor: dr I�tvan Bikit, redovni profesor
Institucija: Univerzitet u Novom Sadu, Prirodno-matemati�ki Fakultet, Institut za fiziku, Novi Sad

Kako elektromagnetno polje uti�e na svaki �ivi organizam, tako uti�e i na �oveka. Uticaj u velikoj meri zavisi od frekvencje i intenziteta polja. U urbanoj sredini elektromagnetno polje poti�e iz vi�e me�usobno nepovezanih izvora, stoga je veoma te�ko proceniti njegov intenzitet.
U okviru ovog rada, na teritoriji Novog Sada na vi�e od 60 lokacija meren je maksimum intenziteta elektromagnetnog polja. Sva mere-nja su bila vr�ena u otvorenom prostoru. U toku merenja kori��en je jedan ru�ni instrument (EM Eye CTM045), koji u peak re�imu rada meri do 10 sekundi i tada prikazuje najve�u merenu vrednost. Instrument je opremljen direkcionom antenom, stoga na su svakoj lokaciji ura�ena 4 merenja, u svim pravcima sveta. U tabelu je unesen zbir ovih vrednosti, po�to je interferencija u slu�aju me�usobno nezavisnih izvora zanemarljiva. U ta�ki gde je intenzitet elektromagnetnog polja velik, merena je i dominantna frekvencija.
Tokom procesa obrade podataka naglasak je stavljen na uticaj mre�e mobilne telefonije. Rezultati, me�utim, ne pokazuju nikakvu za-visnost izme�u bazne i relej stanice i jakog elektromagnetnog polja. Uticaj fabrika je tako�e zanemarljiv.

Klju�ne re�i: elektromagnetno polje, merenje