Navigation Links
'Gray's Paradox' solved: Researchers discover secret of speedy dolphins
Date:11/24/2008

Troy, N.Y. There was something peculiar about dolphins that stumped prolific British zoologist Sir James Gray in 1936.

He had observed the sea mammals swimming at a swift rate of more than 20 miles per hour, but his studies had concluded that the muscles of dolphins simply weren't strong enough to support those kinds of speeds. The conundrum came to be known as "Gray's Paradox."

For decades the puzzle prompted much attention, speculation, and conjecture in the scientific community. But now, armed with cutting-edge flow measurement technology, researchers at Rensselaer Polytechnic Institute have tackled the problem and conclusively solved Gray's Paradox.

"Sir Gray was certainly on to something, and it took nearly 75 years for technology to bring us to the point where we could get at the heart of his paradox," said Timothy Wei, professor and acting dean of Rensselaer's School of Engineering, who led the project. "But now, for the first time, I think we can safely say the puzzle is solved. The short answer is that dolphins are simply much stronger than Gray or many other people ever imagined."

Wei is presenting his findings today at the 61st Annual Meeting of the American Physical Society (APS) Division of Fluid Dynamics in San Antonio, Texas. Collaborators on the research include Frank Fish, a biologist at West Chester University in Pennsylvania; Terrie Williams, a marine biologist at the University of California, Santa Cruz; Rensselaer undergraduate student Yae Eun Moon; and Rensselaer graduate student Erica Sherman.

After studying dolphins, Gray said in 1936 that they are not capable of producing enough thrust, or power-induced acceleration, to overcome the drag created as the mammal sped forward through the water. This drag should prevent dolphins from attaining significant speed, but simple observation proved otherwise a paradox. In the absence of a sound explanation, Gray theorized that dolphin skin must
'/>"/>

Contact: Michael Mullaney
mullam@rpi.edu
518-276-6161
Rensselaer Polytechnic Institute
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Researchers explain nitrogen paradox in forests
2. Killer freeze of 07 illustrates paradoxes of warming climate
3. Ants may help researchers unlock mysteries of human aging process
4. Household exposure to toxic chemicals lurks unrecognized, researchers find
5. Soybean grant gives researchers tools to unravel better bean
6. Researchers shed new light on catalyzed reactions
7. Researchers at IRB Barcelona produce more data on key genes in diabetes
8. Pitt researchers use fluorescence to develop method for detecting mercury in fish
9. Caltech researchers get first 3-D glimpse of bacterial cell-wall architecture
10. Mayo researchers identify dangerous two-faced protein crucial to breast cancer spread and growth
11. Researchers find link between nicotine addiction and autism
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Gray's Paradox' solved: Researchers discover secret of speedy dolphins
(Date:6/26/2015)... June 26, 2015 ATL Technology, LLC, a top ... specialties in single use solutions, headquartered in Springville, ... (a California corporation with locations in ... San Jose, Costa Rica ). This acquisition ... with ATL Technology,s existing facility in ...
(Date:6/25/2015)... 2015  TAKE Solutions Ltd., a global business technology ... States Patent and Trademark Office (USPTO) for its "Method ... Solutions, Clinical Accelerators to reduce the time taken to ... standardization without the accelerators), thus reducing time to market. ... At the heart of the patented Clinical Data Standardization ...
(Date:6/24/2015)... 2015  Synaptics Inc. (NASDAQ: SYNA ), ... announced that Sharp has selected its industry-leading Natural ... its latest flagship smartphone device, the AQUOS ZETA ... shipments of its fingerprint ID sensor technology, this ... and leadership in the biometrics market through its ...
Breaking Biology News(10 mins):ATL Technology Announces Acquisition of MedConx, Inc. and Expanded Global Footprint 2TAKE Solutions Awarded Patent By USPTO 2Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2
... Research (LICR) and the University of California, San Diego ... identifying functional elements in the human genome, according to ... , While the DNA sequence can identify genes (the ... fundamental questions of 'how,' 'when' and 'where' gene products ...
... be caused by hypoglycemic coma actually occurs when glucose is ... rodents led by researchers at the San Francisco VA Medical ... and may be of clinical significance for the treatment of ... cannot be immediately extrapolated to humans. , Insulin is ...
... over a scientific paper that is putting Korea's scientific ... pitted a young Korean doctor, Jeong Hwan Kim, against ... the most powerful players in the country's struggle for ... threatening to disrupt Korea's efforts to recover scientific credibility ...
Cached Biology News:Beyond the DNA: Chemical signatures reveal genetic switches in the genome 2Glucose triggers brain cell death in rats after hypoglycemic coma 2Glucose triggers brain cell death in rats after hypoglycemic coma 3Row over study puts Korea's scientific community under scrutiny again 2
(Date:7/3/2015)... Forskare kan ansöka ... http://www.openinnovationinscience.at till det återkommande utbildningsprogrammet "Lab ... i Wien .  ... forskare och vetenskapsmän som genomfördes av Ludwig ... utmaningar bristen på incitament för att undersöka ...
(Date:7/2/2015)... GLEN ELLYN, Ill. , July 2, 2015 /PRNewswire-USNewswire/ ... and Colton Eakins are gaining invaluable real-world ... Institute of Technology this summer. The students ... Dr. Jeff Wereszczynski,s research group at IIT. ... Professors Dr. Tom Carter , Physics; Dr. ...
(Date:7/1/2015)... Costa Mesa, CA (PRWEB) , ... July 01, 2015 , ... ... and traumatic brain injury (TBI) using single photon emission computed tomography (SPECT) ... Columbia. The study, which examined over 20,000 brain scans and is believed to ...
(Date:7/1/2015)... , July 1, 2015   Neuraltus ... the development of groundbreaking drugs to treat neurodegenerative ... today that Robert G. Miller , M.D., Director ... Sutter Health,s California Pacific Medical Center in San Francisco, ... Association for $1.5 million to help fund a ...
Breaking Biology Technology:Lansering av världens första program för öppen innovation för att utbilda forskare 2Lansering av världens första program för öppen innovation för att utbilda forskare 3COD Students Participate in Prestigious Summer Internships 2Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 2Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 3Brain Scans Can Tell Post-Traumatic Stress Disorder and Traumatic Brain Injury Apart According to New Research by Amen Clinics 4Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 2Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 3Investigator to Receive $1.5 Million Grant from the ALS Association to Help Fund Confirmatory Phase 2 Study of Neuraltus Pharmaceuticals' NP001 4
... to Expand Global Reach in Pioneering Field, ... today announced the acquisition of an ownership interest ... and services for,flexible, or adaptive, clinical trials. Headquartered ... has designed and implemented 80,adaptive programs over the ...
... DIEGO, Sept. 10 /PRNewswire-FirstCall/ - MIGENIX Inc.,(TSX: ... drugs for infectious,diseases will present results of ... at the 14th International Symposium on Hepatitis ... being held September 9th to 13th 2007,in ...
... Sept. 10 Pressure,BioSciences, Inc. (Nasdaq: PBIO ... of pressure cycling technology (PCT) in studies,to (1) ... of colon cancer, and (3) detect proteins associated ... in three presentations at the 29th,Annual Meeting of ...
Cached Biology Technology:United BioSource Acquires Interest in Leading Adaptive Design Technology Service Provider 2MIGENIX to Present Positive Celgosivir Viral Resistance Data at International HCV Meeting 2MIGENIX to Present Positive Celgosivir Viral Resistance Data at International HCV Meeting 3Three Studies by Independent Scientists Highlighting Pressure Cycling Technology (PCT) to be Presented this Week at the British Mass Spectrometry Society's 29th Annual Meeting 2Three Studies by Independent Scientists Highlighting Pressure Cycling Technology (PCT) to be Presented this Week at the British Mass Spectrometry Society's 29th Annual Meeting 3
... enhance luminescent signals and have low ... (or medium binding) polystyrene surface is ... through passive interactions,• Is suitable primarily ... such as antibodies, that have large ...
BD Falcon microtest assay plate. 1536 well 12l, black, flat-bottom PS. Polystyrene, nonsterile, no lid. (15/sp, 60/ca) Packaging: 15 / pack, 60 / case ...
... washing needs in both the 384-well format and ... an excellent solution for a variety applications in ... or Lead Optimization) and Research. , Unmatched ... set a standard for ultra-fast washing in both ...
... MULTI-FUN Incubator is a compact benchtop ... a microprocessor controller with a large ... and agitation speed. Air circulation inside ... incubator. Temperature can be easily calibrated ...
Biology Products: