Photographs of Nebulae; Sir Robert Ball, The Earth's Beginning.
These ' Parker's invaluable series of Roman photographs may be seen at the library of the Victoria and Albert museum, at the Ashmolean museum and the Bodleian library, Oxford.
One was to use a heliometer to measure the distance between the limbs of Venus and the sun during the whole time that the planet was seen projected on the solar disk, and the other was to take photographs of the sun during the period of the transit and subsequently measure the negatives.
Around the world, more than a billion mobile devices that both take and send photographs are currently in use, spread even to the poorest parts of the globe.
I received from them gifts that have the gentle concurrence of the heart, books containing their own thoughts, soul-illumined letters, and photographs that I love to have described again and again.