Physical Research Laboratory

Resonance ◽  
2002 ◽  
Vol 7 (2) ◽  
pp. 92-92
Keyword(s):  
Research Laboratory ◽  
Physical Research Laboratory ◽  
Physical Research

scholarly journals Study of Polarization in OJ 287

2009 ◽  
Vol 5 (S267) ◽  
pp. 111-111
Author(s):  
U. C. Joshi ◽  
Junhui H. Fan ◽  
Shashikiran Ganesh ◽  
K. S. Baliyan
Keyword(s):  
Research Laboratory ◽  
Physical Research Laboratory ◽  
Physical Research ◽  
Bl Lac

Polarimetry of the BL Lac object OJ 287 has been carried out over the last decade in optical bands with the 1.2-m telescope of Mt. Abu Observatory, operated by Physical Research Laboratory, India. OJ 287 underwent several polarization outbursts during this period.

scholarly journals Physical Research Laboratory, Ahmedabad

Nature ◽  
1954 ◽  
Vol 174 (4441) ◽  
pp. 1078-1080
Author(s):  
K. R. RAMANATHAN
Keyword(s):  
Research Laboratory ◽  
Physical Research Laboratory ◽  
Physical Research

scholarly journals Tata Institute Radiocarbon Date List XI

Radiocarbon ◽  
1975 ◽  
Vol 17 (2) ◽  
pp. 219-225 ◽  
Author(s):  
D P Agrawal ◽  
Sheela Kusumgar
Keyword(s):  
Research Laboratory ◽  
Radiocarbon Date ◽  
Physical Research Laboratory ◽  
Tata Institute ◽  
Physical Research

This is the last installment of 14C dates done at the Tata Institute; the lab has now shifted to the Physical Research Laboratory, Navarangpura, Ahmedabad-380 009, India.

scholarly journals Physical Research Laboratory Radiocarbon Date List I

Radiocarbon ◽  
1976 ◽  
Vol 18 (1) ◽  
pp. 89-95 ◽  
Author(s):  
D P Agrawal ◽  
R V Krishnamurthy ◽  
Sheela Kusumgar ◽  
R K Pant
Keyword(s):  
Research Laboratory ◽  
Radiocarbon Date ◽  
Physical Research Laboratory ◽  
Tata Institute ◽  
Physical Research

As the Radiocarbon Lab of the Tata Institute, Bombay, has now been shifted to the Physical Research Laboratory (PRL), Ahmedabad, our new date lists will be termed as above and the samples will be given PRL numbers instead of the former TF. All the pending TF samples were given new PRL numbers.

scholarly journals Physical Research Laboratory Radiocarbon Date List V

Radiocarbon ◽  
1985 ◽  
Vol 27 (1) ◽  
pp. 95-110 ◽  
Author(s):  
D P Agrawal ◽  
R V Krishnamurthy ◽  
Sheela Kusumgar
Keyword(s):  
Standard Deviation ◽  
Oxalic Acid ◽  
Research Laboratory ◽  
Radiocarbon Date ◽  
Physical Research Laboratory ◽  
Physical Research ◽  
Geologic Samples ◽  
Standard Deviations ◽  
Counting Statistics ◽  
Modern Standard

We report here dates on archaeologic and geologic samples. The samples were counted as methane in gas proportional counters. The techniques used have been described earlier (R, 1971, v 13, p 442–449). Dates are expressed in years BP, taking AD 1950 as the reference year. Modern standard was NBS oxalic acid. Quoted errors are based on counting statistics alone and are equivalent to ±1 standard deviation for samples younger than 10,000 years and ± 2 standard deviations for older samples. Descriptions and references regarding the samples have been supplied by the submitters of the samples.

scholarly journals Pretoria Radiocarbon Dates I

Radiocarbon ◽  
1971 ◽  
Vol 13 (2) ◽  
pp. 378-394 ◽  
Author(s):  
J. C. Vogel ◽  
M. Marais
Keyword(s):  
Sea Level ◽  
Neutron Monitor ◽  
Cosmic Radiation ◽  
Research Laboratory ◽  
Radiocarbon Dating ◽  
Physical Research Laboratory ◽  
Radiocarbon Dates ◽  
Physical Research ◽  
Nucleonic Component

In 1969 radiocarbon dating facilities were established at the National Physical Research Laboratory of the C.S.I.R. in Pretoria (25° 43′ S Lat, 28° 21′ E Long; alt 1500 m). The counters are situated in an underground room built of selected concrete and covered by ca. 12 m earth. In this room, the nucleonic component of cosmic radiation is practically absent and the meson flux is reduced by a factor of 3.5 as compared to the surface at sea level in Groningen, Netherlands. A neutron monitor which registers 30 cpm on the surface, counts ca. 0.1 cpm in the underground room.

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