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Correspondence regarding loans to the Royal Observatory and receipts. The letters include correspondence with the Science Museum regarding the loan of the Isaac Roberts Telescope, 1956; letters concerning three large tapestries belonging to Mrs Rosa Lewis, 1952 and 1956; and correspondence regarding the late Wilfred Hall and Galileo's telescopes, 1952.

Scope and Contents Correspondence with the B.B.C. and related papers regarding all aspects of radio talks and schools programmes, including the following subjects: a radio script on Galileo and the use of a Latin version of the Lord's Prayer, and rehearsal arrangements; a list of scripts for the series 'Great Discoveries about the Earth' and 'The Earth and its Neighbours'; Foucault's Pendulum as proof of the rotation of the earth; 1949 scripts entitled 'Other Worlds' being used for 'The Earth and its...

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Engraved by Robert Hart from a picture by [Allan] Ramsey in Trinity College Cambridge.

Scope and Contents 'Miscellanea Mathematica authore J. F.', a collection of mathematical treatises and calculations, 184 folios: observations by Hevelius, Galileo and Towneley, copied in 1671 (4r-7r); a draft treatise, 1672, discussing extracts from the letters of William Crabtree and William Gascoigne of 1640-1642 (9v-22r), with biographical information about them (22r); collected observations of Jupiter's satellites, with an excerpt on the comet of 1681 (22v-24r); observations made by Richard Towneley during...

Scope and Contents A microfilm of papers of the Molyneux family:1. Evangelista Torricellio, 'On the Motion of Heavy Bodys Naturally Falling and Projected. In Two Books. Wherein are shewn the Ingenious Performances of Nature by Motion In A Parabolick Line. And the universal Doctrine of Projects is Dispatchd by the Description of a Semicircle', translated from the Latin by William Molyneaux, Dublin, October 1681.2. Letter book of Samuel Molyneaux, 1707-1709.3. Correspondence of John...

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An annotated copy of the script for 'Galileo Galilei', a talk by Porter for the B.B.C. Schools Radio series 'General Science', which includes a short illustrative play.

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An annotated copy of the script for 'The Earth and the Sun', a talk by Porter on Copernicus and Galileo, including an illustrative play. The talk was the second part of the series 'Great Discoveries about the Earth' for the B.B.C. Schools Radio series 'General Science'. There are several duplicate pages from the script.

Scope and Contents An annotated copy of Porter's script for 'The Night Sky in April' on the astronomers of the past and the discovery of the rings and satellites of Saturn; Leo, Spica in Virgo with Saturn to the east, and the appearance of Saturn in a telescope; the quality of early telescopes, such as those of Galileo and Huygens; Huygens's telescope, his observation of Saturn and discovery of Titan, the largest moon of Saturn, Cassini discovering four moons and Herschel discovering two more; the arrangement...

Scope and Contents A copy of Porter's script for 'The Night Sky in October' on cycles in nature and astronomy; Jupiter in Gemini below Castor and Pollux, its retrograde motion and opposition, and the three-fold conjunction with Uranus; finding Uranus in the night sky, the achievement of William Herschel, and the close conjunction of Jupiter and Uranus on 10 May 1955; Mercury, Venus and Saturn not visible, and the rising and setting of Mars at the time of a summer opposition; ancient astronomy and epicycles,...

Scope and Contents An annotated copy of Porter's script for 'The Night Sky in September' on the Harvest Moon rising at the same time each evening; Jupiter's moons and the discovery of the 12th moon at the Mount Wilson Observatory in the previous year; the orbits of the four larger moons; Jupiter in Taurus near the Pleiades; the apparent retrograde motion of the planets; the epicycle theory and its overthrow by observation of Jupiter's moons; Milton and Galileo, Roemer and the velocity of light and its finite...

Scope and Contents 'Trattato di fortificatione: dell' Eccmo Sigor. Galileo Galilei, mathematico, nello studio di Padova'; the manuscript corresponds nearly with the abridged form of the work, i.e. it does not contain the passages marked with inverted commas in the edition of Giambatesta Venturi (Modena, 1818); the 25 questions which Venturi decided were spurious appear in the manuscript under no other name than Galileo's, as well as a list of things requisite in a siege. The figures for the latter chapters of...