21. But even in Silicon Valley, labor is not entirely " frictionless ." 22. Lusser and von Braun were rivals, and even later their relationship was never frictionless . 23. One of them is attached to a frictionless pulley and to a 65 kilograms counterweight. 24. Having an object move forever without removing energy is fine, in a frictionless environment. 25. In a frictionless world, a new factory would immediately spring up to meet that demand. 26. Flywheel storage systems act as mechanical batteries by spinning heavy wheels in a almost frictionless atmosphere. 27. By enabling frictionless movement among ways of doing business, they benefit both buyers and sellers. 28. Another example is a frictionless pendulum. 29. The vorticity equation for a frictionless atmosphere may be written using pressure as the vertical coordinate: 30. And space has a frictionless vacuum.
