The library of Eratosthenes

The most recent articles


The most recent articles


Delhi (june 2010)

Sunday 11 July 2010 by perbosc
INDIA , Delhi today now i am in Delhi at R.K.G.S.B.V,Madanpur khadar,New Delhi and doing experiment with Delhi children. they will with us on videoconferencing. Latti- 28.52 N, 77.28 E,photo are sending just now . main roll in this experiment - Deepak sharma meerut, Mr. O.N.Shukla, (...)
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Meerut (june 2010)

Tuesday 6 July 2010 by perbosc
INDIA , Meerut today we are doing the experiment in New delhi and at evning 6.30 pm we will vedioconferencing. so link for this . on 21 st we have done the experiment in Meerut ( N.A.S.Inter College,meerut and Villege Gotka,Meerut. Deepak sharma India N.A.S.Inter College- Akash,anju (...)
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Meerut (march 2010)

Tuesday 6 July 2010 by perbosc
CALCULATION distance Meerut-Lafrancaise : 1680 km difference between angles : 44°10’ - 29° = 15°10’ = 15.17° circumference of the earth : 1680 x 360 / 15.17 = 39868km INDIA , Meerut we have done experiment data was following. length of device--- 70 cm length of shadow— 38.8 cm angle— 29 (...)
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Kânyâkumârî (jan 2010)

Tuesday 6 July 2010 by perbosc
City Kânyâkumârî Country India Date 14 january 2010 Solar Noon (UT) 7:00 Latitude 08°05’ N Longitude 77°32’ E Gnomon 98 cm Shadow 55.8 cm Angle 29.66° We have done the experiment with vigyan prasar and MGM so thanks to Dr. Arvind (VigyanPrasar scientist) (...)
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Bidada-Bhuj (Gujurat) INDIA

Monday 28 December 2009 by perbosc


Bhuj-Gujurat
Bidada High School
Thanks to
- Mr.Rajesh Sorathia ,Principal
- Mr. Dilip Bhai deshmukh ,manager
- Mr Deepak Sharma
- Mr Narendra Bhai

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Medvode, Slovenja, Europe

Wednesday 11 November 2009 by perbosc
Medvode (Slovenja) Latitude : 46°07´59" N Longitude : 14°24´38" E Gnomon : 16.5 cm Shadow : 17.2 cm Angle : 46.2° Meerut (India) Latitude : 29°00’ N Longitude : 77°42’ E Gnomon : 77 cm Shadow : 42.7 cm Angle : 29.1°
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Delhi, India - 22 sept 09

Monday 26 October 2009 by perbosc
We are grade 8 students from Rukmini Devi Public School, located in the capital city-Delhi of India (Latitude: 28.4° N and Longitude: 77.2° E). Our country portrays a landscape of vibrant cultural heritage and spiritual mysticism. Its rich customs and traditions bind its people together. So (...)
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Meerut, India - 22 sept 09

Wednesday 23 September 2009 by perbosc
We have done the experiment with 130 student of meerut. They are in 13 group. gp no. 01- rajat kakran,abhilasa chauhan,gaurav chaudhry,swati chaudhry,yash ve3rma,ankit kumarand arun some. lenght of device= 77 cm. lenght of shedow= 42.7cm angle= 29 degree and 1 (...)
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France - 22 sept 09

Wednesday 23 September 2009 by perbosc
The sky was grey today and we had a few sun rays. At 11:50 the shadow was the shortest. gnomon : 100 cm shadow : 96.5 cm angle : 44°
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Summer solstice in France

Thursday 25 June 2009 by perbosc

The measurements in Lafrançaise (France) and Jahipur (India) by Mr. Deepak Sharma , scienfitic district of Meerut

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