A Quote by Leonard Susskind

We often say that the earth is a sphere, but to be precise, the term sphere refers only to the surface. The correct mathematical term for the solid earth is a ball.

Leonard Susskind

Quote Topics

Ball Correct Earth Mathematical Often Only Precise Say Solid Sphere Surface Term

Quote Author

Leonard Susskind
American - Physicist
Born: January 1, 1940

The health of our home planet and the survival of our species will only be secured through the use of space resources and the expansion of Earth's economic sphere to the Moon and beyond. Creating an off-Earth economy and multi-planet civilization will safeguard the long term prospects of humanity.

Bob Richards

If today there is a proper American "sphere of influence" it is this fragile sphere called earth upon which all men live and share a common fate--a sphere where our influence must be for peace and justice.

Hubert H. Humphrey

Earth as we know it came into being through its four great components: land, water, air, and life, all interacting in the light and energy of the sun. Although there was a sequence in the formation of the land sphere, the atmosphere, the water sphere, and the life sphere, these have so interacted with one another in the shaping of the Earth that we must somehow think of these as all present to one another and interacting from the beginning.

Thomas Berry

One way to think about a pure hyperbolic surface is that it's the geometric opposite of a sphere. If you look at a sphere, the curvature is the same everywhere, as opposed to, say, an egg, which clearly does not curve the same everywhere. This is what makes spheres geometrically important. Mathematically speaking, a sphere has positive curvature and a hyperbolic surface has negative curvature, but both have constant curvature everywhere.

Margaret Wertheim

A sphere is made up of not one, but an infinite number of circles; women have diverse gifts, and to say that women's sphere is the family circle is a mathematical absurdity.

Maria Mitchell

The Earth is cylindrical, three times as wide as it is deep, and only the upper part is inhabited. But this Earth is isolated in space, and the sky is a complete sphere in the center of which is located, unsupported, our cylinder, the Earth, situated at an equal distance from all the points of the sky.

Anaximander

From the rocket we can see the huge sphere of the planet in one or another phase of the Moon. We can see how the sphere rotates, and how within a few hours it shows all its sides successively ... and we shall observe various points on the surface of the Earth for several minutes and from different sides very closely. This picture is so majestic, attractive and infinitely varied that I wish with all my soul that you and I could see it.

Konstantin Tsiolkovsky

Within your sphere of responsibility you have as serious an obligation as do I within my sphere of responsibility. Each of us should be determined to build the kingdom of God on the earth and to further the work of righteousness.

Gordon B. Hinckley

I say people who feel they must have a faith or religion in order to face life are showing a kind of cowardice, which in any other sphere would be considered contemptible. But when it is in the religious sphere it is thought admirable, and I cannot admire cowardice whatever sphere it is in.

Bertrand Russell

I've never done a video where I feel like the images have anything to do with my song, except in the most vague way possible, because I feel like the song is its own complete thing. But ideally, a song is a complete sphere like the Earth, where if you were an alien with a huge, huge finger, you could stick your finger into the middle of the ocean and make an impression on it. It’s not an impregnable sphere, but it is a sphere.

Will Oldham

Sphere Music - Some sounds seem to reverberate along the plain, and then settle to earth again like dust; such are Noise, Discord, Jargon. But such only as spring heavenward, and I may catch from steeples and hilltops in their upward course, which are the more refined parts of the former, are the true sphere music - pure, unmixed music - in which no wail mingles.

Henry David Thoreau

The ideas of people in general are not raised higher than the roofs of the houses. All their interests extend over the earth's surface in a layer of that thickness. The meeting-house steeple reaches out of their sphere.

Nathaniel Hawthorne

In Elementary Music The Relation Of Earth To The Sphere of Water is 4 to 3, As There Are In The Earth Four Quarters of Frigidity to Three of Water.

Robert Fludd

The heaven is spherical in shape, and moves as a sphere; the earth too is sensibly spherical in shape, when taken as a whole; in position it lies in the middle of the heavens very much like its center; in size and distance it has the ratio of a point to the sphere of the fixed stars; and it has no motion from place to place.

Ptolemy

The activities and effects of the Fire and Air elements in the astral sphere call forth the astral-electric fluid, and the activities and effects of the Water and Earth elements call forth the astral-magnetic fluid. The spirit-beings use these fluids to create the effects or rather the causes in our physical world. The Akasha Principle of the astral sphere maintains the harmonious equilibrium of the elements in the entire astral sphere.