English Mechanic and Mirror of Science and Art, Томове 115–1161922 |
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Страница 10
... mirror 8 in . diameter , focal length 72 in . ? 2 . What diameter flat mirror would be necessary in making a telescope from same and its distance from reflecting mirror ? 3. Would a terrestrial pancratic eyepiece 35 to 55x from { ' ! 1 ...
... mirror 8 in . diameter , focal length 72 in . ? 2 . What diameter flat mirror would be necessary in making a telescope from same and its distance from reflecting mirror ? 3. Would a terrestrial pancratic eyepiece 35 to 55x from { ' ! 1 ...
Страница 11
... mirror with focal length of 30 in . any use in its present condition , or is focal length too short ? -H . W. Taylor [ 7 . ] - BINOCULAR AND TELESCOPE . My prism binocular has object - glasses 1 in . diameter , magnification eight times ...
... mirror with focal length of 30 in . any use in its present condition , or is focal length too short ? -H . W. Taylor [ 7 . ] - BINOCULAR AND TELESCOPE . My prism binocular has object - glasses 1 in . diameter , magnification eight times ...
Страница 12
... Mirrors of every form , and repairs . Insulated Wire , Resistance Wire , Ebonito , Fibre , Lamps . Our Renowned Morse Keys and New High Note Buzzer . Aneroids , Thermometers , Drawing Instruments , Compasses , and Artist's Colours ...
... Mirrors of every form , and repairs . Insulated Wire , Resistance Wire , Ebonito , Fibre , Lamps . Our Renowned Morse Keys and New High Note Buzzer . Aneroids , Thermometers , Drawing Instruments , Compasses , and Artist's Colours ...
Страница 22
... mirror would not do less than this , and should big , as it is intended for the grower's use only . preferably be 1 inches . The pancratic eye- Also how are edible oils deodorised ? Is it piece should give satisfactory results within a ...
... mirror would not do less than this , and should big , as it is intended for the grower's use only . preferably be 1 inches . The pancratic eye- Also how are edible oils deodorised ? Is it piece should give satisfactory results within a ...
Страница 23
... Mirrors , Silvered by method . More light and durability . - G CALVER , Manse , Walpole , Halesworth . Baker's ... mirror . List price , £ 49 ; our price to clear , £ 35. - Below . One London - made Astronomical Telescope .. with ...
... Mirrors , Silvered by method . More light and durability . - G CALVER , Manse , Walpole , Halesworth . Baker's ... mirror . List price , £ 49 ; our price to clear , £ 35. - Below . One London - made Astronomical Telescope .. with ...
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