who discovered that the earth rotates on an axis
Earth's rotation In 499 CE, the Indian astronomer Aryabhata wrote that the spherical earth rotates about its axis daily, and that the apparent movement of the stars is a relative motion caused by the rotation of the Earth. He provided the following analogy: "Just as a man in a boat going in one direction sees the stationary things on the bank as moving in the opposite direction, in the same way to a man at Lanka
Pulse Pressure waves generated by the heart in systole move the arterial walls. Forward movement of blood occurs when the boundaries are pliable and compliant. These properties form enough to create a palpable pressure wave.
Harlan Howard Howard formulated the oft-quoted definition of a great country song: "Three chords and the truth."[3]
Gitanjali William Butler Yeats wrote the introduction to the first edition of Gitanjali.[4]