Robert Dennard did not invent the battering ram, this was invented many 100's of years before he was even born. What Robert Dennard did invent was DRAM (Dynamic Random Access Memory).
When were dungarees invented?
Association for the Defence of the Memory of Marshal Pétain was created in 1951.
Sand bags where invented in the 1800's. The man/woman who invented them is unknown
They cave men invented them and we don't really know. The first weapon invented was an ulu. The first weapon discovered was the spear.
Nasa
Memory foam was invented by NASA in the 1960s as a way to improve the safety and comfort of aircraft cushions. The material was designed to provide support and cushioning to astronauts during take-off and landing. Over time, memory foam became popular in consumer products such as mattresses and pillows due to its pressure-relieving properties.
Although memory foam was invented in the 1960s by NASA there is little evidence of health benefits due to sleeping on a memory foam mattress. Those that sleep on such mattresses say that they enjoy it but scientific studies neither support nor deny any health benefits.
Memory foam is made up of a polyurethane foam material with is molded into a form of a mttress, pillow, and so on.
High density foam is just your typical foam. It does not conform to your body when it heats up like memory foam does.
Instead of purchasing a complete cushion made out of memory foam, it is possible to add one or two memory foam toppers to a regular foam cushion. This will give the support but will not be as hot or as prone to permanent indentations as memory foam.
Memory foam on shoes makes the shoes more comfortable.
Memory foam can be used for a baby mattress. anonymous@oola.com
The truthful answers is: "It's the thickness you are willing to pay for". One manufacturer I know of makes memory foam mattresses in three configurations: The top 2" of the mattress is memory foam, the top 4" is memory foam, and the whole mattress is memory foam. The price varies accordingly. Personal Note: If you can't afford a memory foam mattress, try a memory foam pillow. Awesome, especially if you're a "side sleeper".
Many products, such as sleeping mattresses, use Novaform memory foam. The memory foam is also used by various companies that sell pillows and blankets.
Earl Whipple invented the foam finger. It was originally made of wood.
Many companies offer memory foam mattresses, which may vary in quality. The following guide provides simple tips for finding a high quality memory foam mattress. When looking for a memory foam mattress, look for information on the density of the foam. Lower density foam is often cheap and low quality, while higher density foam provides a more comfortable sleeping experience. A high quality mattress should contain at least 6 inches of high density memory foam, with lighter foam layered on top. When buying a mattress, make sure that the foam is genuine memory foam. Squeeze a sample, and see how long it takes to expand. If the foam expands to it's original shape in less than a second, it's not memory foam.