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:8/31/2019)... ... August 30, 2019 , ... Today marks the introduction ... consumers in the preconception period with doctor-approved products and resources, including The Get ... are trying to get pregnant. , Natalist is built on the values of ...
(Date:8/29/2019)... ... August 28, 2019 , ... Salimetrics, ... passed their five-year milestone of collaboration in salivary bioscience stress research. ... primary focus towards performing feasibility studies, phase 1 – phase 4 clinical ...
(Date:8/27/2019)... ... August 27, 2019 , ... Ambry Genetics ... improve genetic testing guidelines. In the largest cohort study of its kind, Ambry ... at-risk patients. , Clinicians use guidelines to inform decisions about which patients ...
Breaking Biology News(10 mins):
(Date:8/15/2019)... ... August 15, 2019 , ... PathSensors ... Lawrence is a member of the Institute of Food Technologists (IFT) Board of ... Advisory Board, Joint Institute for Food Safety and Applied Nutrition (JIFSAN) Advisory Council ...
(Date:8/8/2019)... ... August 08, 2019 , ... Inference Solutions , ... organizations, today announced that the company’s Studio Intelligent Virtual Agent (IVA) platform earned ... Inference will officially accept the award at Frost & Sullivan’s annual Excellence in ...
(Date:8/6/2019)... (PRWEB) , ... August 06, 2019 , ... ... tools for characterizing microbiome populations down to the strain level, has announced partnerships ... kits and other products to companies and research organizations in Australia, Benelux, Indonesia, ...
(Date:8/4/2019)... ... August 02, 2019 , ... Cirtec Medical Corporation, a strategic outsourcing partner for ... has begun construction on a 30,000 sq. ft. manufacturing facility in the Coyol ... , The facility, which is expected to be fully operational by the end of ...
Breaking Biology Technology:
Cached News: