HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Tuesday Afternoon » Journal
Introducing Discussionist: A new forum by the creators of DU
Page: « Prev 1 ... 2 3 4 5 6 7 8 9 10 11 12 ... 94 Next »

Tuesday Afternoon

Profile Information

Gender: Do not display
Member since: Wed Sep 26, 2007, 11:23 PM
Number of posts: 54,497

Journal Archives

View of the Milky Way as seen from the surface of Mars =

Posted by Tuesday Afternoon | Sun May 11, 2014, 10:54 AM (14 replies)

Wherein We Learn The True Nature of Bacon =

Posted by Tuesday Afternoon | Sat May 10, 2014, 10:46 AM (3 replies)

Frame this ...

Posted by Tuesday Afternoon | Thu May 8, 2014, 02:29 PM (0 replies)

Tapir !!!

Congratulations to the Denver Zoo, on the birth of an endangered Malayan Tapir calf a week ago!

Posted by Tuesday Afternoon | Thu May 8, 2014, 11:12 AM (6 replies)

Milky Way served on Table Rock

Posted by Tuesday Afternoon | Mon May 5, 2014, 07:14 PM (8 replies)

New Element Confirmed

The periodic table has been extended, with the announcement of the confirmation of the yet to be named element 117.

In 2010 a US Russian collaboration announced they had produced atoms of an element with 117 protons, filling a gap that appeared when 118 was made four years earlier. However International Union of Pure and Applied Chemistry (IUPAC) insists on corroboration by two independent teams before it allows new elements to be added to the Periodic Table, although a temporary name of Ununseptium is in use until confirmation has been made. It has taken four years, but this appears to have finally arrived.

“Making element 117 is at the absolute boundary of what is possible right now,” says Professor David Hinde of the Australian National University, one of the authors of a paper published today in Physics Review Letters “That’s why it’s a triumph to create and identify even a few of these atoms.”

Hinde was part of a team at the GSI laboratory in Germany who fused calcium 48 and berkelium 249. This is not easy, because berkelium 249 is both hard to produce in substantial quantities and has a half life of 320 days. Less than half of any amount produced will still be around a year after it was made, which means transportation and purification can't wait. The resulting product, like all atoms heavier than lead, was unstable. By watching the alpha particles emitted the team concluded that these were the product of two decay chains, both originating with 294117, that is an atom with 117 protons and 177 neutrons. One of the chains included the isotopes 270Db and266Lr, the latter adding four neutrons to the previous highest isotope of lawrencium.

Read more at http://www.iflscience.com/chemistry/new-element-confirmed#TW0Zx4dCr0lXDOuM.99
Posted by Tuesday Afternoon | Fri May 2, 2014, 01:20 PM (3 replies)

Picture This ...

DC, a massive demonstration from the Cowboy and Indian Alliance is taking place against the tar sands and KXL pipeline. Let us usher in the era of living with Mother Earth and each other.
Posted by Tuesday Afternoon | Sun Apr 27, 2014, 04:09 PM (4 replies)

What would MFM see?

Posted by Tuesday Afternoon | Thu Apr 24, 2014, 11:26 AM (5 replies)

Always Be Batman !!!

Posted by Tuesday Afternoon | Wed Apr 23, 2014, 12:01 PM (7 replies)

Sunflowers ...

Posted by Tuesday Afternoon | Wed Apr 23, 2014, 11:51 AM (21 replies)
Go to Page: « Prev 1 ... 2 3 4 5 6 7 8 9 10 11 12 ... 94 Next »