A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge:
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Elektronisch E-Book |
Sprache: | English |
Veröffentlicht: |
Cambridge
printed by J. Archdeacon Printer to the University; and sold by W. H. Lunn, Cambridge; and J. Deighton, No. 325, Holborn, London
MDCCXCIII. [1793]
|
Schlagworte: | |
Online-Zugang: | UEI01 BSB01 LCO01 SBR01 UBA01 UBG01 UBM01 UBR01 UBT01 UER01 Volltext |
Beschreibung: | English Short Title Catalog, T89242 Price from imprint: price One Shilling and Sixpence Reproduction of original from British Library |
Beschreibung: | Online-Ressource ([4],22Seiten,plate) 8° |
Internformat
MARC
LEADER | 00000nmm a22000001c 4500 | ||
---|---|---|---|
001 | BV049229579 | ||
003 | DE-604 | ||
005 | 00000000000000.0 | ||
007 | cr|uuu---uuuuu | ||
008 | 230822s1793 xxk|||| o||u| ||||||eng d | ||
035 | |a (ZDB-1-ECC)NLM006703275 | ||
035 | |a (OCoLC)1422483597 | ||
035 | |a (DE-599)GBVNLM006703275 | ||
040 | |a DE-604 |b ger | ||
041 | 0 | |a eng | |
044 | |a xxk |c XA-GB | ||
049 | |a DE-12 |a DE-70 |a DE-155 |a DE-384 |a DE-473 |a DE-19 |a DE-355 |a DE-703 |a DE-824 |a DE-29 |a DE-11 | ||
100 | 1 | |a Atkins, James |d 1750-1819 |e Verfasser |4 aut | |
245 | 1 | 0 | |a A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
264 | 1 | |a Cambridge |b printed by J. Archdeacon Printer to the University; and sold by W. H. Lunn, Cambridge; and J. Deighton, No. 325, Holborn, London |c MDCCXCIII. [1793] | |
300 | |a Online-Ressource ([4],22Seiten,plate) |c 8° | ||
336 | |b txt |2 rdacontent | ||
337 | |b c |2 rdamedia | ||
338 | |b cr |2 rdacarrier | ||
500 | |a English Short Title Catalog, T89242 | ||
500 | |a Price from imprint: price One Shilling and Sixpence | ||
500 | |a Reproduction of original from British Library | ||
533 | |a Online-Ausg |b Farmington Hills, Mich |c Cengage Gale |d 2009 |f Eighteenth Century Collections Online |n Electronic reproduction; Available via the World Wide Web |7 |2009|||||||||| | ||
650 | 4 | |a Optics |v Early works to 1800 | |
856 | 4 | 0 | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |x Verlag |3 Volltext |
912 | |a ZDB-1-ECC | ||
999 | |a oai:aleph.bib-bvb.de:BVB01-034490936 | ||
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l UEI01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l BSB01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l LCO01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l SBR01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l UBA01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l UBG01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l UBM01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l UBR01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l UBT01 |p ZDB-1-ECC |x Verlag |3 Volltext | |
966 | e | |u http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |l UER01 |p ZDB-1-ECC |x Verlag |3 Volltext |
Datensatz im Suchindex
_version_ | 1804185675754373120 |
---|---|
adam_txt | |
any_adam_object | |
any_adam_object_boolean | |
author | Atkins, James 1750-1819 |
author_facet | Atkins, James 1750-1819 |
author_role | aut |
author_sort | Atkins, James 1750-1819 |
author_variant | j a ja |
building | Verbundindex |
bvnumber | BV049229579 |
collection | ZDB-1-ECC |
ctrlnum | (ZDB-1-ECC)NLM006703275 (OCoLC)1422483597 (DE-599)GBVNLM006703275 |
format | Electronic eBook |
fullrecord | <?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>03416nmm a22004691c 4500</leader><controlfield tag="001">BV049229579</controlfield><controlfield tag="003">DE-604</controlfield><controlfield tag="005">00000000000000.0</controlfield><controlfield tag="007">cr|uuu---uuuuu</controlfield><controlfield tag="008">230822s1793 xxk|||| o||u| ||||||eng d</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ZDB-1-ECC)NLM006703275</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(OCoLC)1422483597</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)GBVNLM006703275</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-604</subfield><subfield code="b">ger</subfield></datafield><datafield tag="041" ind1="0" ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="044" ind1=" " ind2=" "><subfield code="a">xxk</subfield><subfield code="c">XA-GB</subfield></datafield><datafield tag="049" ind1=" " ind2=" "><subfield code="a">DE-12</subfield><subfield code="a">DE-70</subfield><subfield code="a">DE-155</subfield><subfield code="a">DE-384</subfield><subfield code="a">DE-473</subfield><subfield code="a">DE-19</subfield><subfield code="a">DE-355</subfield><subfield code="a">DE-703</subfield><subfield code="a">DE-824</subfield><subfield code="a">DE-29</subfield><subfield code="a">DE-11</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Atkins, James</subfield><subfield code="d">1750-1819</subfield><subfield code="e">Verfasser</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Cambridge</subfield><subfield code="b">printed by J. Archdeacon Printer to the University; and sold by W. H. Lunn, Cambridge; and J. Deighton, No. 325, Holborn, London</subfield><subfield code="c">MDCCXCIII. [1793]</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">Online-Ressource ([4],22Seiten,plate)</subfield><subfield code="c">8°</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">English Short Title Catalog, T89242</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">Price from imprint: price One Shilling and Sixpence</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">Reproduction of original from British Library</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="a">Online-Ausg</subfield><subfield code="b">Farmington Hills, Mich</subfield><subfield code="c">Cengage Gale</subfield><subfield code="d">2009</subfield><subfield code="f">Eighteenth Century Collections Online</subfield><subfield code="n">Electronic reproduction; Available via the World Wide Web</subfield><subfield code="7">|2009||||||||||</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Optics</subfield><subfield code="v">Early works to 1800</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-ECC</subfield></datafield><datafield tag="999" ind1=" " ind2=" "><subfield code="a">oai:aleph.bib-bvb.de:BVB01-034490936</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">UEI01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">BSB01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">LCO01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">SBR01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">UBA01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">UBG01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">UBM01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">UBR01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">UBT01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="966" ind1="e" ind2=" "><subfield code="u">http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc</subfield><subfield code="l">UER01</subfield><subfield code="p">ZDB-1-ECC</subfield><subfield code="x">Verlag</subfield><subfield code="3">Volltext</subfield></datafield></record></collection> |
id | DE-604.BV049229579 |
illustrated | Not Illustrated |
index_date | 2024-07-03T22:36:37Z |
indexdate | 2024-07-10T09:59:00Z |
institution | BVB |
language | English |
oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-034490936 |
oclc_num | 1422483597 |
open_access_boolean | |
owner | DE-12 DE-70 DE-155 DE-BY-UBR DE-384 DE-473 DE-BY-UBG DE-19 DE-BY-UBM DE-355 DE-BY-UBR DE-703 DE-824 DE-29 DE-11 |
owner_facet | DE-12 DE-70 DE-155 DE-BY-UBR DE-384 DE-473 DE-BY-UBG DE-19 DE-BY-UBM DE-355 DE-BY-UBR DE-703 DE-824 DE-29 DE-11 |
physical | Online-Ressource ([4],22Seiten,plate) 8° |
psigel | ZDB-1-ECC |
publishDate | 1793 |
publishDateSearch | 1793 |
publishDateSort | 1793 |
publisher | printed by J. Archdeacon Printer to the University; and sold by W. H. Lunn, Cambridge; and J. Deighton, No. 325, Holborn, London |
record_format | marc |
spelling | Atkins, James 1750-1819 Verfasser aut A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge Cambridge printed by J. Archdeacon Printer to the University; and sold by W. H. Lunn, Cambridge; and J. Deighton, No. 325, Holborn, London MDCCXCIII. [1793] Online-Ressource ([4],22Seiten,plate) 8° txt rdacontent c rdamedia cr rdacarrier English Short Title Catalog, T89242 Price from imprint: price One Shilling and Sixpence Reproduction of original from British Library Online-Ausg Farmington Hills, Mich Cengage Gale 2009 Eighteenth Century Collections Online Electronic reproduction; Available via the World Wide Web |2009|||||||||| Optics Early works to 1800 http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc Verlag Volltext |
spellingShingle | Atkins, James 1750-1819 A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge Optics Early works to 1800 |
title | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_auth | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_exact_search | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_exact_search_txtP | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_full | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_fullStr | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_full_unstemmed | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_short | A treatise on the horizontal sun and moon, wherein is shewn, according to the principles of refraction, how it happens, that those bodies seem bigger in the horizon than in the zenith; And also how Mankind do not form their Judgment concerning the Magnitude of Objects by the Angles, which they Subtend at the Eye, either when they are seen in Refracted or Unrefracted Light; And Likewise how the Superior Planets May a Retrograde motion in opposition, Altho' the Sun Moves in an Orbit Round the Earth; Together with certain Astronomical Difficulties. By the Rev. James Atkins, Rector of St. Michael's in Long-Stanton in Cambridgeshire, and Formerly Fellow of St. Mary Magdalene College in Cambridge |
title_sort | a treatise on the horizontal sun and moon wherein is shewn according to the principles of refraction how it happens that those bodies seem bigger in the horizon than in the zenith and also how mankind do not form their judgment concerning the magnitude of objects by the angles which they subtend at the eye either when they are seen in refracted or unrefracted light and likewise how the superior planets may a retrograde motion in opposition altho the sun moves in an orbit round the earth together with certain astronomical difficulties by the rev james atkins rector of st michael s in long stanton in cambridgeshire and formerly fellow of st mary magdalene college in cambridge |
topic | Optics Early works to 1800 |
topic_facet | Optics Early works to 1800 |
url | http://nl.sub.uni-goettingen.de/id/0031202200?origin=/collection/nlh-ecc |
work_keys_str_mv | AT atkinsjames atreatiseonthehorizontalsunandmoonwhereinisshewnaccordingtotheprinciplesofrefractionhowithappensthatthosebodiesseembiggerinthehorizonthaninthezenithandalsohowmankinddonotformtheirjudgmentconcerningthemagnitudeofobjectsbytheangleswhichtheysubtendattheeyeei |