J. F. Roux
Roux thought that the act of artistic creation resides in the decisions that the artist makes about what to leave out from the represented world, so that a painting is the product of the artist’s considered choices about what forms and colours to emphasise. There are some early paintings at Langebaan of fishing boats and later, from a trip with Margot to Sicily, of dwellings. Roux was also commissioned on occasion to paint pictures of farm houses. But on the whole, his landscapes represent nature in all its timelessness, stripped of any trace of human intervention.
Torx
The green circle, passing through the six points of contact between the two components, represents the direction of the rotational force being exerted at each of those points. Because the plane of contact is not perpendicular to this circle, a radial force is also generated which tends to "burst" the female component and "crush" the male one. If this radial force component is too great for the material to withstand, it will cause the corners to be rounded off one or both components or will split the sides of the female part. The magnitude of this force is proportional to the cotangent of the angle (depicted in orange) between the green circle and the contact plane.