As anyone that owns a canvas made product such as tents, blinds or canopies knows that after a while you collect all types of tough stains on your canvas, these can be anything from bird droppings to oil.
ISO is a worldwide federation of national standards bodies from some 100 countries, one from each country. The International Organization for Standardization (ISO) is a nongovernmental organization, established to promote the development of standardisation and related activities in the world Continue reading →
The heavier the person on the trampoline, the longer the springs extend. Trampolines get their bounce in the way that Hooke’s law interacts with Newton’s third law of motion. … The springs push back with Continue reading →