Profile cover photo
Profile photo
Lone Ffog
210 followers
210 followers
About
Posts

Post has shared content
I was jealous of mantis shrimp. They have around twelve types of colour receptor in their eyes whereas mere humans have only three.

However, if I'm reading this article correctly those receptors are wired up in a simple way. Whereas a human's neurons use the differences between the signals from three types of receptor to enable the perception of millions of colours in a three-dimensional colour space, the mantis shrimp is simply detecting 12 different colours, each centred on one particular wavelength.

Note the pseudopupils in the video. Those are the parts where there is direct line of sight from the camera to a receptor in the shrimp's eye. They're black because if the receptor is working efficiently it absorbs light rather than reflecting light. The fact that there are multiple pseudopupils visible in each eye means that the mapping from the world to the shrimp eye surface isn't a straightforward projection like it is with human retinas.

http://www.businessinsider.com/the-mantis-shrimp-color-vision-system-2014-1

(Thanks to +Stephen Bowline for pointing me to this.)
Animated Photo

Post has shared content
Raccoon Grabs a Handful of Cat Food and Runs Away
Animated Photo

Post has attachment

Post has attachment

Post has attachment
https://petitions.whitehouse.gov/response/isnt-petition-response-youre-looking

By Paul Shawcross, Chief of the Science and Space Branch at the White House Office of Management and Budget

The Administration shares your desire for job creation and a strong national defense, but a Death Star isn't on the horizon. Here are a few reasons:

The construction of the Death Star has been estimated to cost more than $850,000,000,000,000,000. We're working hard to reduce the deficit, not expand it.

The Administration does not support blowing up planets.
Why would we spend countless taxpayer dollars on a Death Star with a fundamental flaw that can be exploited by a one-man starship?

However, look carefully (here's how) and you'll notice something already floating in the sky - that's no Moon, it's a Space Station! Yes, we already have a giant, football field-sized International Space Station in orbit around the Earth that's helping us learn how humans can live and thrive in space for long durations. The Space Station has six astronauts - American, Russian, and Canadian - living in it right now, conducting research, learning how to live and work in space over long periods of time, routinely welcoming visiting spacecraft and repairing onboard garbage mashers, etc. We've also got two robot science labs - one wielding a laser -- roving around Mars, looking at whether life ever existed on the Red Planet.


Keep in mind, space is no longer just government-only. Private American companies, through NASA's Commercial Crew and Cargo Program Office (C3PO), are ferrying cargo -- and soon crew -- to space for NASA, and are pursuing human missions to the Moon this decade.

Even though the United States doesn't have anything that can do the Kessel Run in less than 12 parsecs, we've got two spacecraft leaving the Solar System and we're building a probe that will fly to the exterior layers of the Sun. We are discovering hundreds of new planets in other star systems and building a much more powerful successor to the Hubble Space Telescope that will see back to the early days of the universe.

We don't have a Death Star, but we do have floating robot assistants on the Space Station, a President who knows his way around a light saber and advanced (marshmallow) cannon, and the Defense Advanced Research Projects Agency, which is supporting research on building Luke's arm, floating droids, and quadruped walkers.

We are living in the future! Enjoy it. Or better yet, help build it by pursuing a career in a science, technology, engineering or math-related field. The President has held the first-ever White House science fairs and Astronomy Night on the South Lawn because he knows these domains are critical to our country's future, and to ensuring the United States continues leading the world in doing big things.

Post has attachment

Post has attachment

Post has attachment

Post has attachment
Photo

Post has attachment
Wait while more posts are being loaded