HOME >> BIOLOGY >> NEWS
Physics tip sheet #37

able to reproduce most of the observed features of bathtub vortices bringing us closer to properly understanding just how a bathtub drains. Some of the more surprising features of bathtub drainage that may be new to you are that bubbles often detach from the bottom tip of the vortex before it reaches all the way down to the plughole. These bubbles occur because the tip of the vortex is unstable when rotation is fast. The air bubble is usually sucked straight down the drain after detaching. The flow around the plughole itself has some unusual behavior. Most of the water on the bottom of the tub flows toward the hole but about one centimeter before the hole, jumps upward before turning around and going down the hole.

Journal article: http://link.aps.org/abstract/PRL/v91/e104502

4) Wave nature of biomolecules
L. Hackermuller, et al.
Physical Review Letters (Published online: August 28, 2003)

The wave nature of biomolecules has been shown for the first time in tetraphenylporphyrin (TPP) and quantum interference has been shown for the largest molecules yet. These experiments showed that when the molecules passed through two slits, they formed interference patterns on a screen, just like two rocks thrown into a pond show interference patterns of waves on the surface. The porphyrin structure in TPP is at the heart of many biomolecules and is the color center of chlorophyll and hemoglobin. The largest molecule to exhibit interference is the fluorofullerene C60F48. Experiments showed that the interference happens exactly as predicted by quantum mechanics, despite the molecules consisting of 78 and 108 atoms each.

Journal article: http://link.aps.org/abstract/PRL/v91/e090408

5) Superfluid gyroscope
E. Hodby, et al.
Physical Review Letters (Published online: August 27, 2003)
'"/>

Contact: David Harris
harris@aps.org
301-209-3238
American Physical Society
8-Sep-2003


Page: 1 2 3

Related biology news :

1. Physics gravity model applicable to disease spread
2. Physics tip sheet #42
3. Physics tip sheet #41 - April 5, 2004
4. Physics tip sheet #39 - Nov. 17, 2003
5. Physics tip sheet #36 - July 30, 2003
6. Physics tip sheet #34 - April 1, 2003
7. Physics tip sheet #33 March 28, 2003
8. Physics tip sheet #30 - January 9, 2003
9. Physics tip sheet #29 October 23, 2002
10. Physics tip sheet #21 July 10, 2002
11. Physics tip sheet #20 July 3, 2002

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2017)...   Bridge Patient Portal , an enterprise ... EMR Systems , an electronic medical record solutions ... established a partnership to build an interface between ... Centricity™ products, including Centricity Practice Solution (CPS), Centricity ... new integrations will allow healthcare delivery networks using ...
(Date:4/18/2017)... Calif. , April 18, 2017  Socionext Inc., a global ... of a media edge server, the M820, which features the company,s ... recognition software provided by Tera Probe, Inc., will be showcased during ... at the NAB show at the Las Vegas ... ...
(Date:4/11/2017)... BEACH GARDENS, Fla. , April 11, 2017 ... identity management and secure authentication solutions, today announced ... contract by Intelligence Advanced Research Projects Activity (IARPA) ... for IARPA,s Thor program. "Innovation has ... onset and IARPA,s Thor program will allow us ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... of a United States multicenter, prospective clinical study that demonstrates the accuracy ... test capable of identifying clinically significant acute bacterial and viral respiratory tract ...
(Date:10/11/2017)... ... October 11, 2017 , ... The ... context, enabling overexpression experiments and avoiding the use of exogenous expression plasmids. The ... transformative for performing systematic gain-of-function studies. , This complement to loss-of-function studies, ...
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , ... of Cancer Research, London (ICR) and ... with SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple ... as MUK nine . The University of ... is partly funded by Myeloma UK, and ICR will perform ...
(Date:10/10/2017)... (PRWEB) , ... October 10, ... ... development-stage cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed ... targeted HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration with ...
Breaking Biology Technology:
Cached News: