Clarksville, TN Online: News, Opinion, Arts & Entertainment.


Topic: Plastic

NASA Scientists work with new material “Metallic Glasses” that can be molded like Plastic but retains strength of Metal

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Open a door and watch what happens — the hinge allows it to open and close, but doesn’t permanently bend. This simple concept of mechanical motion is vital for making all kinds of movable structures, including mirrors and antennas on spacecraft.

Material scientists at NASA’s Jet Propulsion Laboratory in Pasadena, California, are working on new, innovative methods of creating materials that can be used for motion-based mechanisms.

When a device moves because metal is flexing but isn’t permanently deformed, that’s called a compliant mechanism.

This image shows components of a mirror structure that can be rotated very precisely by flexing parts made of a material scientists call "bulk metallic glass." (NASA/JPL-Caltech)

This image shows components of a mirror structure that can be rotated very precisely by flexing parts made of a material scientists call “bulk metallic glass.” (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 

Budweiser of Clarksville becomes Clarksville-Montgomery County Green Certified

 

Clarksville-Montgomery County Green Certification ProgramMontgomery County, TN – The latest business to celebrate their Clarksville-Montgomery County Green Certification is Budweiser of Clarksville, owned by the Hand family of Clarksville.

Charles Hand, Chairman of the Board of Hand Family Companies, has a history of taking care of the environment. For decades, Hand has been doing his part to keep our community clean. His actions carried over to his family businesses when the Company began participating in the Adopt-A-Highway Program in the early 1990s, and the efforts have been growing ever since.

Clarksville-Montgomery County Green Certification ribbon cutting for Budweiser of Clarksville.

Clarksville-Montgomery County Green Certification ribbon cutting for Budweiser of Clarksville.

«Read the rest of this article»

Sections: Business | No Comments
 

NASA’s Cassini Spacecraft detects Propylene, key Ingredient of Plastic on Saturn’s moon Titan

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Cassini spacecraft has found propylene, a chemical used to make food-storage containers, car bumpers and other consumer products, on Saturn’s moon Titan.

This is the first definitive detection of the plastic ingredient on any moon or planet, other than Earth.

A small amount of propylene was identified in Titan’s lower atmosphere by Cassini’s composite infrared spectrometer (CIRS). This instrument measures the infrared light, or heat radiation, emitted from Saturn and its moons in much the same way our hands feel the warmth of a fire.

NASA's Cassini spacecraft looks toward the night side of Saturn's largest moon and sees sunlight scattering through the periphery of Titan's atmosphere and forming a ring of color. (NASA/JPL-Caltech/Space Science Institute)

NASA’s Cassini spacecraft looks toward the night side of Saturn’s largest moon and sees sunlight scattering through the periphery of Titan’s atmosphere and forming a ring of color. (NASA/JPL-Caltech/Space Science Institute)

«Read the rest of this article»

Sections: Technology | No Comments
 


Tennessee Department of Agriculture reports Summer Drought did not decimate Tennessee’s Christmas Tree Crop

 

Nashville, TN – Most customers who visit local Christmas tree farms in the coming weeks won’t notice, but growers without irrigation this summer saw significant losses in seedlings planted over the 2011-12 fall and winter.

According to Kyle Holmberg, marketing specialist with the Tennessee Department of Agriculture, some growers reported new seedling losses up to 80 percent. Losses of mature trees ran between 10 and 20 percent in areas subjected to significant drought combined with excessive heat.

Ripshin Tree Farm in East Tennessee.

Ripshin Tree Farm in East Tennessee.

«Read the rest of this article»

Sections: News | No Comments
 



Personal Controls

Archives