It may seem like a good idea to brush your teeth after eating to clean out any stray food particles, and maybe to get a bad taste out of your mouth. However, according to Colgate your teeth are most vulnerable to damage after eating and drinking. The acidic foods and drinks we consume softens the enamel on our teeth. Brushing within 60 minutes after eating can wear down this enamel.
Though brushing after every meal isn’t a good idea, you should still brush 2-3 times every day. Brushing at night is the most important; when your mouth gets dry during sleep bacteria can more easily damage your teeth. Brushing in the morning is important to clean out the plaque that collected on your teeth overnight. Technically, it’s more effective to brush your teeth after breakfast than before (but again, it has to be at least an hour after you’re done eating). Brushing during the day is also a good idea, but brushing more than three times in one day can cause damage to the gums. I bet you didn’t think brushing teeth could be this complicated!
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Page 4 - Technology Facts
Starpath is a cement and tarmac coating agent that uses light from the sun during the day to glow along pathways at night!
It is costly to keep pathways in parks well lit to ensure the safety of cyclists and pedestrians, but Pro-Teq (a British based company) has developed a product that can drastically cut back on those costs. 'Starpath' is a spray-on coating of light-absorbing particles that harvests ultra-violet rays from the sun during the day and dramatically lights up at night.
It is anti-slip and waterproof and can be applied to various surfaced like cement, wood and tarmac. 'Starpath' comes with added benefits. Its non-reflective surface doesn't contribute to light pollution, which not only limits views of the night sky, but has negative consequences for local nocturnal wildlife due to the constant illumination.
"Our surface works best over tarmac or concrete, predominantly tarmac, which is the main bulk of the U.K. Path network," says Pro-Teq's Neil Blackmore. "When it's coming to the end of its useful life, we can rejuvenate it with our system, creating not only a practical, but a decorative finish."
It is, however, not yet determined whether 'Starpath' will be illuminating enough to also deter crime to the extent that overhead streetlights do. Neil Blackmore suggests that for larger urban parks where the possibility of crime is higher, his technology could be used in conjunction with overhead lighting, if not replacing street lights completely.
Scientists developed a camera that can depict how light moves. It has a shutter speed of one trillion frames per second!
MIT scientists have developed a remarkable camera that can depict the movement of light! The camera captures images 40 billion times faster than a standard HD camera and has a shutter speed of approximately a trillion frames per second!
It is impossible to directly record light at that speed, so the camera takes millions of repeated scans to recreate each image. The process is called femto-photography. "There's nothing in the universe that looks fast to this camera," said Andrea Velten, one of the researchers involved in the project.
The technique was created by scanning one, thin horizontal line at a time by using an adapted streak tube. One image is equivalent to a single scan line, and hundreds of images had to be taken to create one frame. The scientists did this by repeating each shot, angling the camera's view with mirrors to record a different scan line of the object every time.
This camera has revealed new ways of seeing the world and it can also be used to analyze faults and material properties, scientific imaging for understanding ultra-fast processes and medical imaging to reconstruct sub-surface elements—ultrasound with light!
The camera can even capture the scattering of light below the surface of solid objects!
Some awesome lists!
Japan is a technologically rich country and has employed industrial robots for the longest time. A robotic suit that will, in future assist the elderly and the disabled to stand and move around has been developed by Japanese robot-maker Cyberdene. It has now received a global safety certificate.
HAL, short for Hybrid Assistive Limb, is a pair of robotic legs that can be attached to the legs of a disabled or aged person. It will help them move around like a normal person. The artificial limb was not the first artificial limb made by Cyberdene. The company has made robotic arms in the past, too.
This opens up a whole new world of opportunities for disabled people to move around freely. For now it will be used to help patients rehabilitate from nerve and muscle illnesses. The robot suit HAL will be used by ten hospitals in the first clinical trials of it's kind.
Cyberdene is based in Tsukuba, northeast of Tokyo and has rented out approximately 330 suits to about 150 hospitals and welfare organisations. To clarify, Cyberdene is not to be confused with the firm of the same name in the movie ‘Terminator’ and HAL is not related to the evil supercomputer from Stanley Kubric’s ‘2001:A Space Odyssey’ either.
It would have cost NASA more to fake the first moon landing than it would have to just land on the moon!
Conspiracy theorists love to deny the moon landing ever happened and they point out a number of reasons that "prove" the historical moment was faked in a studio. The fact is, we had the technology to land on the moon, but we did not yet have the technology to fake it in 1969!
Conspiracy lovers argue that the film was shot on Earth and then just slowed down to emulate the minus-gravity effect of the astronauts strolling around on the moon. However, the camera required to do that didn't exist at the time.
Slow motion video can only be done in one of two ways. You can shoot video at normal speed and slow down the playback, or you can film it at high speed and play it at normal speed.
The second way is called overcranking, and produces a smoother picture. In 1969, this was only possible with film cameras and anybody who knows anything about cameras and filming knows the moon landing was definitely not shot with a film camera.
It would actually have cost more to develop all the technology conspiracy theorists say was used to fake a moon landing in 1969, than what it did cost to just go to the moon and do a real moon landing!