Example sentences of "with the naked eye [conj] " in BNC.

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1 Unfortunately it is a very barren group , and when I first went to the southern hemisphere I had difficulty in identifying the pole star , Sigma Octantis , which is only of magnitude 5.5 , and is none too easy to see with the naked eye unless the sky is really dark and clear .
2 The spectral type is F. In general F-stars are said to be yellowish , but I have never seen any colour in Canopus , either with the naked eye or with optical aid ; to me it looks pure white .
3 It is said to be slightly yellowish , though I have never seen any colour in it either with the naked eye or with binoculars .
4 Hosts : Sheep and goats Intermediate hosts : Molluscs : Muellerious in snails and slugs ; Protostrongylus in snails Genera and sites : Muellerius capillaris found in alveoli Protostrongylus many species , found in small bronchioles Minor related genera are Cystocaulus , Spiculocaulus and Neostrongylus Distribution : Worldwide except for arctic and subarctic regions These are brown hair-like worms 1.0-3.0 cm long which are difficult to discern with the naked eye as they are embedded in lung tissue .
5 The whiskers were too small to see with the naked eye and nobody could possibly make a testing machine on that scale .
6 I well remember the occasion when he discovered a brightish nova , just about visible with the naked eye and easily seen with binoculars .
7 Præsepe , nicknamed the Beehive , is one of the finest clusters of its type ; it is easily visible with the naked eye and is well seen with × 7 binoculars , while with × 12 and × 20 it is truly glorious .
8 There is however one splendid open cluster , M41 , which is easily visible with the naked eye and is resolvable with × 20 binoculars ; various individual stars can be seen with lower magnifications .
9 Pollux is a K-type star , whose orange colour is noticeable with the naked eye and unmistakable in binoculars ; Castor is white , and is an interesting multiple system , though binoculars show it as single .
10 L2 Puppis is a semi-regular variable with a range of from 3.4 to 6.2 , so that it is almost always visible with the naked eye and is well within binocular range even at minimum ; it is of type M , and clearly orange .
11 In the same region is another wide pair , Mu , separable with the naked eye and very easy with × 7 ; the magnitudes are 3.0 and 3.6 .
12 It has a period of 357 days , and at minimum is so faint that large telescopes are needed to show it , but at maximum it has been known to rise to 5.7 , and is then just visible with the naked eye and very easy in binoculars .
13 The fourth wall was constructed of rows of teak slats , incorporated into which were two seamless sliding doors , impossible to detect with the naked eye and only capable of being activated by miniature sonic transmitters .
14 They are beyond the visible spectrum but we do not have to make our observations with the naked eye and there are ways in which y-rays can be detected to form an image pattern .
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