#Wifi –” Danish Students Attract International Attention with Cress and Wifi Experiment “…

 [ Nota Bene: French and Danish versions hereunder
As usual: Only the links will remain shortly … ]
 

Danish Students Attract International Attention with Cress and Wifi Experiment

Posted in Scientific Research, What’s Happening Around the World?, Wifi in Schools Written by http://www.dr.dk (translated)

Cinco estudantes da escola Hjallerup, na Dinamarca, descobriram que plantas não crescem perto de roteadores Wi-Fi. http://ow.ly/lunaF

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Foreign researchers are extremely excited for a biology project from five 9th grade girls.

Researchers from England, Holland and Sweden have shown great interest in the five girls’ biology experiments.

– None of us sleep with the mobile next to the bed anymore. Either the phone is put far away, or it is put in another room. And the computer is always off, says Lea Nielsen.

http://www.dr.dk/Nyheder/Indland/2013/05/16/131324.htm (in Danish)

Forsøg med karse i 9. klasse vækker international opsigt

Udenlandske forskere er begejstrede for et biologiprojekt fra fem 9. klasses-piger.

16. Maj 2013 kl. 17:07

Forskere fra både England, Holland og Sverige har udvist stor interesse for de fem pigers biologiforsøg. Foto: Pigerne fra 9.b

Tag 12 gange 400 karsefrø og fordel dem i 12 bakker. Derefter placeres seks bakker i to rum med samme temperatur. Giv bakkerne samme mængde vand og sol over 12 dage, og husk så lige til slut at udsætte halvdelen af dem for mobilstråling.

Læs også DOKUMENTATION: Her er rapporten bag karseprojektet

Det er opskriften på et biologiforsøg tilsyneladende så genialt, at det har vakt international opsigt blandt anerkendte biologer og strålingseksperter. Bag forsøget står fem piger fra 9.b på Hjallerup Skole i Nordjylland, og det hele startede med at de havde svært ved at koncentrere sig i timen:

– Vi synes alle sammen, vi havde oplevet at have koncentrationsproblemer i skolen, hvis vi havde sovet med mobilen ved siden af hovedet, og nogle gange også oplevet at have svært ved at sove, forklarer Lea Nielsen, der er en af de fem forskerspirer.

Læs også Forskere: Ingen grund til strålepanik

Forsøget

Skolen havde ikke udstyret til at teste virkningen af mobilstråling på dem selv, men det var nok i virkeligheden meget godt. Derfor måtte pigerne finde et alternativ. Og svaret blev karsefrø.

Seks bakker frø blev sat ind i et rum uden stråling, og seks bakker blev sat ind i et andet rum ved siden af to routere. Sådan en skulle ifølge pigernes projekt udsende cirka samme type stråling som en helt almindelig mobil.

Den “raske” karse uden påvirkning fra router. Foto: Pigerne fra 9.b

Så var det ellers bare at vente 12 dage, observere, måle, veje og tage billeder undervejs. Og resultatet talte sit tydelig sprog for gruppen: Karsefrøene ved siden af routeren var slet ikke vokset, og nogle af dem var endda muterede eller døde.

– Det er virkelig skræmmende, at der er så stor påvirkning, så vi blev også selv meget mærket af resultatet, fortæller Lea Nielsen.

Den “syge” karse udsat for påvirkning fra router. Foto: Pigerne fra 9.b

Reaktionerne

Forsøget sikrede pigerne en finaleplads i konkurrencen “Unge Forskere”, men det var kun begyndelsen. Forskere fra både England, Holland og Sverige har sidenhen udvist stor interesse for pigernes projekt.

Fra venstre: Lea Nielsen, Mathilde Nielsen, Signe Nielsen, Sisse Coltau og Rikke Holm. Foto: Kim Horsevad

En af dem er Olle Johansson, professor ved Karolinska Instituttet i Stockholm, og han er meget imponeret. Han vil nu gentage forsøget med en belgisk forskningskollega, professor Marie-Claire Cammaert ved Université libre de Bruxelles, for forsøget er ifølge ham helt genialt:

 
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About jonwadier

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2 Responses to #Wifi –” Danish Students Attract International Attention with Cress and Wifi Experiment “…

  1. jonwadier says:

    This is the English Translation of the Danish article we already posted .

  2. jeanwadier says:

    Photo courtesy of Kim Horsevad, teacher at Hjallerup Skole in Denmark.

    Five ninth-grade young women from Denmark recently created a science experiment that is causing a stir in the scientific community.

    It started with an observation and a question. The girls noticed that if they slept with their mobile phones near their heads at night, they often had difficulty concentrating at school the next day. They wanted to test the effect of a cellphone’s radiation on humans, but their school, Hjallerup School in Denmark, did not have the equipment to handle such an experiment. So the girls designed an experiment that would test the effect of cellphone radiation on a plant instead.

    The students placed six trays filled with Lepidium sativum, a type of garden cress into a room without radiation, and six trays of the seeds into another room next to two routers that according to the girls calculations, emitted about the same type of radiation as an ordinary cellphone.

    Over the next 12 days, the girls observed, measured, weighed and photographed their results. Although by the end of the experiment the results were blatantly obvious — the cress seeds placed near the router had not grown. Many of them were completely dead. While the cress seeds planted in the other room, away from the routers, thrived.

    The experiment earned the girls (pictured below) top honors in a regional science competition and the interest of scientists around the world.

    According to Kim Horsevad, a teacher at Hjallerup Skole in Denmark were the cress experiment took place, a neuroscience professor at the Karolinska Institute in Sweden, is interested in repeating the experiment in controlled professional scientific environments.

    I’m sure the world will continue watching these young women, and this experiment, for many years to come. SOURCE

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