| NEWTON | Scientist associated with the theory of gravity (6) |
| AVOGADRO | Italian scientist associated with the number 6.022 times 10 to the 23rd power (8) |
| ARCHIMEDES | Greek scientist associated with the cry "Eureka!" |
| DERRIDA | Jacques ___, French philosopher associated with the theory of deconstructionism (7) |
| EINSTEIN | Physicist associated with the theory of relativity (8) |
| APPLE | Associated with the legends of Avalon and of William Tell, fruit said to have further prompted Isaac Newton in his theory of gravity (5) |
| GALILEO | Scientist associated with Sky had problems with The Sun's direction perhaps (7) |
| ISAACNEWTON | Scientist associated with apples (5,6) |
| QUANTUM | Acquaints men, chum, with the theory of atoms (7,9) |
| MECHANICS | Acquaints men, chum, with the theory of atoms (7,9) |
| ARITHMETICAL | Dealing with the theory of numerical calculations (12) |
| RICHTER | Productive period shortened for scientist associated with shake-ups |
| ISAAC | English polymath who formulated his theory of gravity whilst watching apples fall, _ Newton (5) |
| CENTRE | ___ of gravity is the point where the whole weight of the body may be supposed to be acting (6) |
| WEIGHT | Force of gravity measured in Newtons; the boldness of a typographical font; or, the density or thickness of paper or cloth (6) |
| TWINGE | Double the force of gravity ending in collapse, bringing sudden pain (6) |
| GROUND | Force of gravity on all sides of earth (6) |
| GEORGE | Star of Gravity and Upin the Air, ... Clooney (6) |
| FALLEN | Having dropped by the force of gravity (6) |
| DUVETS | Covers pairs each side of centre of gravity (6) |
