HOME >> BIOLOGY >> NEWS
Physics tip sheet #20 July 3, 2002

1) Universal veins
S. Bohn, B. Andreotti, S. Douady, J. Munzinger, Y. Couder
Physical Review E (Print issue: June 2002)

Despite the stunning diversity of leaf shapes from one plant variety to another, a universal formula may guide the vein patterns in all leaves. An analysis of leaf vein networks revealed simple relationships between the angles that veins form when they intersect and the thickness of the veins at the intersections. The universal similarity of vein structure from one plant to another suggests that the patterns provide insight to leaf mechanics, but are of little help in distinguishing or cataloging plants, thereby eliminating one proposed botanical cataloging scheme.

Physics News Update: http://www.aip.org/enews/physnews/2002/split/596-3.html
Journal article: http://link.aps.org/abstract/PRE/v65/e061914
Graphics: http://www.aip.org/mgr/png/2002/156.htm

2) Quantum entanglement in carbon nanotubes
C. Bena, S. Vishveshwara, L. Balents, M. P. A. Fisher
Physical Review Letters (Print issue: July 15, 2002)

Entangled pairs of particles, in which measuring the state of one simultaneously determines the state of the other, are a central part of proposed schemes for quantum cryptography and teleportation. One potential source of such particles is the stream of conjoined electrons that exist in superconductors, but no one has been able to drive a wedge between these so-called Cooper pairs. A new proposal suggests one possible separation method: send them down a pair of carbon nanotubes.

Physical Review Focus: http://focus.aps.org/v9/st33.html
Journal article: http://link.a
'"/>


Contact: David Harris
harris@aps.org
301-209-3238
American Physical Society
3-Jul-2002


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 #37
6. Physics tip sheet #36 - July 30, 2003
7. Physics tip sheet #34 - April 1, 2003
8. Physics tip sheet #33 March 28, 2003
9. Physics tip sheet #30 - January 9, 2003
10. Physics tip sheet #29 October 23, 2002
11. Physics tip sheet #21 July 10, 2002

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


(Date:3/30/2017)... , March 30, 2017 Trends, opportunities ... (physiological and behavioral), by technology (fingerprint, AFIS, iris recognition, ... recognition, and others), by end use industry (government and ... immigration, financial and banking, and others), and by region ... , Asia Pacific , and ...
(Date:3/24/2017)... -- The Controller General of Immigration from Maldives Mr. ... have received the prestigious international IAIR Award for the most innovative high ... ... Maldives Immigration Controller ... (small picture on the right) have received the IAIR award for the ...
(Date:3/22/2017)... 21, 2017   Neurotechnology , a provider ... today announced the release of the SentiVeillance ... improved facial recognition using up to 10 surveillance, ... computer. The new version uses deep neural-network-based facial ... it utilizes a Graphing Processing Unit (GPU) for ...
Breaking Biology News(10 mins):
(Date:6/19/2017)... (PRWEB) , ... June 19, 2017 , ... A colony ... among its cells and tissues by delivering pollen and nectar containing nutrients necessary for ... means to stay healthy. , Many recent indicators point to a decline in honey ...
(Date:6/16/2017)... , ... June 16, 2017 , ... ... and analytics solutions, today announced that its Anzo Smart Data Lake® (Anzo ... Technology Solution’ category for the 2017 Software & Information Industry Association (SIIA) CODiE ...
(Date:6/15/2017)... ... June 15, 2017 , ... New resistant soybean ... options for managing Palmer amaranth and other broadleaf weeds resistant to glyphosate. But ... necessary. Auxin herbicides are known to drift and to cause harm to sensitive, ...
(Date:6/15/2017)... PA (PRWEB) , ... June 15, 2017 , ... ... Esther Klein Gallery (EKG) follows an artist’s journey through creative experimentation and interdisciplinary ... 2017 and runs through July 22nd. An opening reception will be held at ...
Breaking Biology Technology:
Cached News: