NO. See at least :

• William Gilbert with De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure (1600)

• Galileo Galilei with e.g. the Sidereus Nuncius (1610)

• William Harvey with Exercitatio Anatomica de Motu Cordis et Sanguinis in Animalibus (1628)

• René Descartes with Discours de la méthode. Pour bien conduire sa raison, et chercher la vérité dans les sciences (Discourse on the Method. An introduction to the Essais, which include the Dioptrique, the Météores and the Géométrie) (1637).

NO. See at least :

• William Gilbert with De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure (1600)

• Galileo Galilei with e.g. the Sidereus Nuncius (1610)

• William Harvey with Exercitatio Anatomica de Motu Cordis et Sanguinis in Animalibus (1628)

• René Descartes with Discours de la méthode. Pour bien conduire sa raison, et chercher la vérité dans les sciences (Discourse on the Method. An introduction to the Essais, which include the Dioptrique, the Météores and the Géométrie) (1637).

Note : "scientific method" is a vague concept: it is a "recipe" with various ingredients: observation, experiments, hypotheses, mathematization.

Observations, for example, are as old as mankind: for Europe, they date back at least to Ancient Greece : see Presocratic Philosophy.

The peculiar mixture of the ingredients is an Early Modern invention: we can find it fully mature into Newton's works, but Newton relies heavily on Galileo and Descartes.

NO. See at least :

• William Gilbert with De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure (1600)

• Galileo Galilei with e.g. the Sidereus Nuncius (1610)

• William Harvey with Exercitatio Anatomica de Motu Cordis et Sanguinis in Animalibus (1628)

• René Descartes with Discours de la méthode (Discourse on the Method. An introduction to the Essais, which include the Dioptrique, the Météores and the Géométrie (1637)

NO. See at least :

• William Gilbert with De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure (1600)

• Galileo Galilei with e.g. the Sidereus Nuncius (1610)

• William Harvey with Exercitatio Anatomica de Motu Cordis et Sanguinis in Animalibus (1628)

• René Descartes with Discours de la méthode. Pour bien conduire sa raison, et chercher la vérité dans les sciences (Discourse on the Method. An introduction to the Essais, which include the Dioptrique, the Météores and the Géométrie) (1637).