What is the small body from which a planet originated in the early stages of the formation of the solar system?
Space & NavigationThe various planets are thought to have formed from the solar nebula, the disc-shaped cloud of gas and dust left over from the Sun’s formation. The currently accepted method by which the planets formed is accretion, in which the planets began as dust grains in orbit around the central protostar. What is a small body
What is meant by scalar product of two vectors?
Space & NavigationThe scalar product of two vectors is defined as the product of the magnitudes of the two vectors and the cosine of the angles between them. What is scalar product of two vectors give an example? The scalar product (or dot product) of two vectors is defined as the product of the magnitudes of both
What is the working distance of an objective How does it change with increasing magnification?
Space & NavigationWorking distance and magnification are inversely related. As you increase the magnification, the working distance decreases very rapidly. Oil-immersion lenses, which are often used for 100x objective lenses, are very, very close the specimen when optimal focus is achieved. How does the working distance change when you increase the magnification? The working distance decreases as
How do you prove the sum of the angles in a quadrilateral 360?
Space & NavigationA quadrilateral is a polygon which has 4 vertices and 4 sides enclosing 4 angles and the sum of all the angles is 360°. When we draw a draw the diagonals to the quadrilateral, it forms two triangles. Both these triangles have an angle sum of 180°. Therefore, the total angle sum of the quadrilateral
What are undefined terms?
Space & NavigationUndefined terms are those terms that don’t require a formal definition. The four terms are point, line, plane, and set. A point is quite simply, a dot. Points are labeled with one capital letter. What are examples of undefined terms? In geometry, point, line, and plane are considered undefined terms because they are only explained
What is the oldest sundial?
Space & NavigationThe oldest known sundial was made in Egypt in 1500 BC. It was L-shaped. The top of its vertical leg cast its shadow on the horizontal leg. How old is the oldest sundial? about 1,500 years BC The oldest known sundial was found in Egypt and dates from the time of Thutmose III, about 1,500