Let's Tute
Creating a Value Scale for Drawing Depth and Dimensionality
In this video, the teacher explains how to create a value scale, which is a system of organizing values ranging from white to black with shades of gray in between. The value scale helps artists create depth and dimensionality in their...
Let's Tute
Learning Gradation and Shading Compositions
In this video, the teacher explains the concept of graduation in shading and demonstrates how to create a graduation scale using different pencil grades. They then show how to apply this technique to draw a realistic sphere with light...
Corbett Maths
Enlargements Using Ray Method
Figure out what to do when there is no grid to count. Using a ruler and a sharp pencil, the narrator shows how to perform a dilation when the figure is not on a grid. The ray method works by drawing a ray from the center of dilation...
Khan Academy
Hubble's Law, Scale of the Universe, Cosmology and Astronomy
Sal defines and explains the premise of Hubble's Law and then uses trigonometry to show the relationship between velocity and distance. He explains that as the universe expands, objects get farther away from each other; as objects move...