The Cool Science Stuff Thread

[gotsnowgotslush]

With teeth! *shudder* Have they figured out which side goes up ?

 

[Emerson40]

School Kids Invent Condom That Changes Color To Detect STIs

Pretty cool when stuff like this comes from young, creative minds.


SNIP:

A condom that changes colour when it comes into contact with sexually transmitted infections has been invented by a group of school children.

The 'S.T.EYE' has a built-in indicator to detect infections such as chlamydia and syphilis, turning a different colour depending on the strain of bacteria present.

It is the brainchild Daanyaal Ali, 14, Muaz Nawaz, 13 and Chirag Shah, 14, pupils at Isaac Newton Academy in Ilford, Essex, who wanted to "make detecting harmful STIs safer than ever before" without the need for invasive tests.

You may think awkward post-coital silences are common enough as it is - but the group's ingenuity has been recognised with an award, the TeenTech gong for best health innovation.

Daanyall said: "We created the S.T.EYE as a new way for STI detection to help the future of the next generation.

"We wanted to make something that make detecting harmful STIs safer than ever before, so that people can take immediate action in the privacy of their own homes without the invasive procedures at the doctors.​

SOURCE

 

[thør]

https://pbs.twimg.com/media/CIbrvueWgAAHPOW.jpg

 

[Bacigalupo]

https://scontent-iad3-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/11701089_1161941230493553_5890284658795563438_n.jpg?oh=514c1d00f4f01a2ec1b2e238bbc7a584&oe=5617981C

 

[Lovely2222]

https://pbs.twimg.com/media/CIbrvueWgAAHPOW.jpg

https://scontent-iad3-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/11701089_1161941230493553_5890284658795563438_n.jpg?oh=514c1d00f4f01a2ec1b2e238bbc7a584&oe=5617981C

I enjoyed both of these!

 

[ms_ann_thrope]

I miss Islandman.

 

[gotsnowgotslush]

Earth 2.0 planet Kepler 452b discovered by Kepler Telescope

1,400 light years away. A light year is the distance that a beam of light travels in a year, and is equal to around 5.9 trillion miles.

If a spaceship was made that was capable of travelling at that speed constantly and carrying people, it would take them around 25.8 million years to get from Earth to Kepler 452b.

http://www.independent.co.uk/news/s...w-planet-kepler-space-telescope-10410960.html


SETI Institute and NASA have confirmed the discovery of Kepler 452b, the most Earth-like planet ever encountered. Located in the Goldilocks zone of its host star, this planet would have “just the right” conditions to support liquid water and possibly even life. This extraordinary world was spotted by the Kepler Space Telescope and is the first confirmed planet among over 500 potential candidates being added to the mission's catalogue.


http://observer.com/2015/07/breaking-discovery-of-habitable-earth-like-planet-announced/

 

[aussiegeekygal]

I was pretty excited to learn about this this morning

Earth 2.0 planet Kepler 452b discovered by Kepler Telescope

1,400 light years away. A light year is the distance that a beam of light travels in a year, and is equal to around 5.9 trillion miles.

If a spaceship was made that was capable of travelling at that speed constantly and carrying people, it would take them around 25.8 million years to get from Earth to Kepler 452b.

http://www.independent.co.uk/news/s...w-planet-kepler-space-telescope-10410960.html


SETI Institute and NASA have confirmed the discovery of Kepler 452b, the most Earth-like planet ever encountered. Located in the Goldilocks zone of its host star, this planet would have “just the right” conditions to support liquid water and possibly even life. This extraordinary world was spotted by the Kepler Space Telescope and is the first confirmed planet among over 500 potential candidates being added to the mission's catalogue.


http://observer.com/2015/07/breaking-discovery-of-habitable-earth-like-planet-announced/

 

[Colonel Hogan]

Earth 2.0 planet Kepler 452b discovered by Kepler Telescope

1,400 light years away. A light year is the distance that a beam of light travels in a year, and is equal to around 5.9 trillion miles.

If a spaceship was made that was capable of travelling at that speed constantly and carrying people, it would take them around 25.8 million years to get from Earth to Kepler 452b.

http://www.independent.co.uk/news/s...w-planet-kepler-space-telescope-10410960.html

Uh, noooo.

Do the math. Again, I mean. Your deletion of a key paragraph in the article yielded an inaccurate statement.

 

[Pure_Euphoria]

https://s-media-cache-ak0.pinimg.com/736x/aa/f7/06/aaf706da5e73c089ac9b3fdd1d19b8df.jpg

 

[gotsnowgotslush]

Do the math. Again, I mean. Your deletion of a key paragraph in the article yielded an inaccurate statement.

arrgggg! Do not leave us in pitiful ignorance. Tell us what the correct statement should be.

 

[Pure_Euphoria]

0.99999999999999 (repeating) = 1

For those who are interested, there is a little video game I like to play called Poly Bridge. The concept of building bridges is extremely interesting and you can spend hours adjusting and readjusting the bridge to make it viable for cars to pass over and boats to travel under.

https://s-media-cache-ak0.pinimg.com/originals/58/90/57/58905792bb8dfdea7de733b187bc5078.gif

https://s-media-cache-ak0.pinimg.com/736x/e0/a4/62/e0a4623b5faceac9573812dde23de1da.jpg

 

[Libsam]

Poster hanging on the back of my "computer room" door.
Got it about 8 years ago at one of those teachers' aid stores- I'm not a teacher, went there with a girl friend.

http://i.imgur.com/Vfj2ipf.jpg

 

[aussiegeekygal]

https://s-media-cache-ak0.pinimg.com/736x/aa/f7/06/aaf706da5e73c089ac9b3fdd1d19b8df.jpg

Brilliant!

 

[Colonel Hogan]

arrgggg! Do not leave us in pitiful ignorance. Tell us what the correct statement should be.

The second a third lines of your most recent post were, within the article from which you quoted, originally connected by the following text:

Light travels at over 670 million miles per hour. Light from the Sun takes around eight minutes to reach Earth, so naturally, a trip to Kepler 452b would take an incredibly long time.

Nasa's New Horizon probe - the one that recently took the amazing pictures of Pluto - left Earth's orbit faster than any other spacecraft before it, at around 36,373 mph.

The third line of your last post referenced the 36,373 mph speed of the New Horizon probe. Thus, "If a spacecraft carrying humans travelled at this speed (the speed of the New Horizon probe) towards Kepler 452b, it would take the unlucky astronauts around 25.8 million years to get there."

By deleting this information without reference, you made it sound like a spacecraft traveling at the speed of light would take 25.8 million years to get to Kepler 452b, when it had already been established that the new planet was "only" 1,400 light years away.

See?

 

[JohnnySavage]

I'd hop on a generation ship to the planet.

 

[Colonel Hogan]

I'd hop on a generation ship to the planet.

The problem with deep space navigational errors, however, is that your great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, grand children are the ones who end up paying for your mistake.

Unless you have the scruples of a Congressmen adding to the national debt, and then, of course, you probably don't care, but you get the point.

 

[phrodeau]

The New Horizon probe withstood accelerations of nearly 10 G's to get to that speed (36,000mph). People can survive such a force, but not remain conscious through it.

That makes me imagine some potential alien discovering the New Horizons probe, opening the box with Clyde Tombaugh's ashes inside, and thinking he was an unfortunate passenger.

 

[JohnnySavage]

The problem with deep space navigational errors, however, is that your great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, grand children are the ones who end up paying for your mistake.

Unless you have the scruples of a Congressmen adding to the national debt, and then, of course, you probably don't care, but you get the point.

I doubt they'd let me navigate. I'm not so good at the maths. I'd better serve the mission by walking around telling the crew amusing stories.

 

[Colonel Hogan]

The New Horizon probe withstood accelerations of nearly 10 G's to get to that speed (36,000mph). People can survive such a force, but not remain conscious through it.

That makes me imagine some potential alien discovering the New Horizons probe, opening the box with Clyde Tombaugh's ashes inside, and thinking he was an unfortunate passenger.

According to the 2002 Guinness World Records, Apollo 10 set the record for the highest speed attained by a manned vehicle at 39,897 km/h (11.08 km/s or 24,791 mph) during the return from the Moon on May 26, 1969.

And they were weightless the whole time.

Top speed attained has nothing to do with how many Gs a space traveler endures. It's the period of acceleration that gets you there. The shorter the tougher. After all, what's the hurry? It's going to take us decades to get there anyway. We don't gain anything but a headache by going "eyeballs in" for two or three extra hours.

Not to put too fine a point on it, but here is some good research a space enthusiast did on the question:

Here is some simple math that will answer all your questions about "g" forces during any powered phase of flight. Stay with me a bit here and you will see it is simple high school math.

For any burn you need the change in velocity in feet/sec. For example the lunar liftoff went from zero to 6047 ft/sec. ( I get this from an Apollo 17 Flight Plan I have.) Now divide this change in velocity by the time in seconds of the burn. In this case 7 minutes 14 seconds equals 434 seconds. This yields 13.935 ft/sec squared. (That's the average acceleration during the burn). Now all we have to do is divide this 13.935 by 32 ft/sec squared (the acceleration of one "earth g') and you get .435 "g" average coming off the moon.

Another example: TLI: Change in velocity was 10375 ft/sec. Time of burn was 344 seconds. 10375 divided by 344 is 30.16 ft/sec squared average during the burn. Divide this by 32 ft/sec squared and average "g" is .94 for the burn.

I have done this for all burns for a flight to the moon and back just to get a feel for the "g" load they experienced. Except for launch all accelerations were quite benign. Launch on the other hand was quite different and was not nearly so linear as great gobs of propellant were used which changed dramatically the vehicle weight during boost which changed acceleration as it burned off. For that I would refer you to the Saturn V Manual where graphs show the "g" load during each stage to orbit.

http://www.collectspace.com/ubb/Forum29/HTML/001418.html

In other words, once you are already in weightless space traveling at "balls-ass feet-per-sec" accelerating to "2x balls-ass-fps" can be accomplished quite comfortably simply by extending the length of the burn as you wish.

 

[Bacigalupo]

Things have learnt to crawl that ought to walk.

http://phenomena.nationalgeographic.com/2015/07/23/a-fossil-snake-with-four-legs/?utm_source=Facebook&utm_medium=Social&utm_content=link_fb20150724ph-snakelegs&utm_campaign=Content&sf11282067=1

 

[Saint Peter]

The problem with deep space navigational errors, however, is that your great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, grand children are the ones who end up paying for your mistake.

Unless you have the scruples of a Congressmen adding to the national debt, and then, of course, you probably don't care, but you get the point.

"I think those o-rings will work just fine. Early lunch?"

 

[thør]

"I think those o-rings will work just fine. Early lunch?"

It's still a little frosty outside.

 

[Bacigalupo]

Prepare to have your heart stolon.

http://www.iflscience.com/plants-and-animals/researchers-find-earliest-example-reproduction-complex-organism

 

[thør]

https://scontent.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/71800_10151430902875390_242432550_n.jpg?oh=f18aca0ec7b20eec749dc1f2e7ec1056&oe=567285D9