Navigation Links
Cats show perfect balance even in their lapping
Date:11/11/2010

CAMBRIDGE, Mass. Cat fanciers everywhere appreciate the gravity-defying grace and exquisite balance of their feline friends. But do they know those traits extend even to the way cats lap milk?

Researchers at MIT, Virginia Tech and Princeton University analyzed the way domestic and big cats lap and found that felines of all sizes take advantage of a perfect balance between two physical forces. The results will be published in the November 11 online issue of the journal Science.

It was known that when they lap, cats extend their tongues straight down toward the bowl with the tip of the tongue curled backwards like a capital "J" to form a ladle, so that the top surface of the tongue actually touches the liquid first. We know this because another MIT engineer, the renowned Doc Edgerton, who first used strobe lights in photography to stop action, filmed a domestic cat lapping milk in 1940.

But recent high-speed videos made by this team clearly revealed that the top surface of the cat's tongue is the only surface to touch the liquid. Cats, unlike dogs, aren't dipping their tongues into the liquid like ladles after all. Instead, the cat's lapping mechanism is far more subtle and elegant. The smooth tip of the tongue barely brushes the surface of the liquid before the cat rapidly draws its tongue back up. As it does so, a column of milk forms between the moving tongue and the liquid's surface. The cat then closes its mouth, pinching off the top of the column for a nice drink, while keeping its chin dry.

The liquid column, it turns out, is created by a delicate balance between gravity, which pulls the liquid back to the bowl, and inertia, which in physics, refers to the tendency of the liquid or any matter, to continue moving in a direction unless another force interferes. The cat instinctively knows just how quickly to lap in order to balance these two forces, and just when to close its mouth. If it waits another fraction o
'/>"/>

Contact: Denise Brehm
brehm@mit.edu
617-253-8069
Massachusetts Institute of Technology, Department of Civil and Environmental Engineering
Source:Eurekalert

Page: 1 2 3 4

Related biology technology :

1. Scientists perfect new nanowire technique
2. The perfect nanocube: Precise control of size, shape and composition
3. £4.9 million to develop metamaterials for invisibility cloaks and perfect lenses
4. Ohio Executive Shares Why Ohio is the Perfect Location for Bioscience Business in National Ad Campaign
5. Practice makes perfect -- motor memory possible for neuroprosthetic control
6. Nikon Instruments Perfect Focus System Wins Second Place in The Scientists Top Innovations of 2008 Award
7. Solar power game-changer: Near perfect absorption of sunlight, from all angles
8. Northwest Biotherapeutics Raises Funding and Proceeds With Balance Sheet Restructuring
9. VirtualScopics Project Balance Exceeds a Record $31 Million
10. Energy Leaders Gather in Houston; Call for Balanced, Careful Approach to Energy Policy
11. Caliper Life Sciences Reports Third Quarter 2008 Results; Sharpens Growth Focus, Strengthens Balance Sheet and Reduces Costs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/15/2014)... Two champions of science, technology, engineering, and mathematics ... competition for middle and high school students designed to ... The competition presents students with real-world problems experienced by ... and Sciences is a program administered by the ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider of ... of tinnitus. Patients listen to sound therapy that is ... of weeks to months, their tinnitus volume decreases. , AudioNotch ... Music and Notched White Noise. Now, AudioNotch is pleased to ...
(Date:1/14/2014)... leading provider of strategic communications services to corporations and organizations preparing ... the United States and Europe , ... returning to the firm,s Washington, D.C. office. ... two years of service as Associate Commissioner for the Office of ...
(Date:1/14/2014)... iLab Solutions, the leader in core facility management ... Product Strategy. In this role, Michelle will work with current ... in the development of iLab products. Her main goal will ... to the scientific community by offering the most advanced, user-friendly, ...
Breaking Biology Technology:Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Former FDA Associate Commissioner Returns To 3D Communications 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2
... Romark Laboratories, L.C., a,privately-owned biotechnology company, ... has joined the Company as Vice President ... Keeffe served as Professor of Medicine, Chief ... Program at Stanford,University Medical Center. He is ...
... NATICK, Mass., Jan. 4 Boston Scientific,Corporation ... has completed the sale of,the controlling interests in ... former principals and shareholders of Advanced,Bionics. Boston Scientific ... the closing of the amended merger agreement with ...
... International,Corporation (Nasdaq: PRXL ) will release Second Quarter ... after the close of the,stock market. The announcement will ... on the PR Newswire website at, http://www.prnewswire.com ., ... at 10:00 a.m. ET,on Thursday, January 24, 2008 to ...
Cached Biology Technology:Romark Laboratories Names Emmet B. Keeffe, M.D. Vice President and Chief Medical Officer 2Boston Scientific Completes Sale of Auditory Business and Drug Pump Development Program 2Boston Scientific Completes Sale of Auditory Business and Drug Pump Development Program 3PAREXEL Announces Date of Second Quarter Fiscal Year 2008 Earnings Release and Conference Call 2
(Date:4/17/2014)... of forests in the Amazon help create tinderbox ... rapid and widespread forest loss during drought years, ... show that forests in the Amazon could reach ... forest fires lead to large-scale loss of trees, ... professor of geography, Penn State. , "We documented ...
(Date:4/17/2014)... BLOOMINGTON, Ind. -- Indiana University researchers have detected new ... with diabetes. This discovery could have far-reaching implications for ... the care of over 25 million Americans. , "We ... the retinas at such early stages," said Ann Elsner, ... Optometry and lead author of the study. "We set ...
(Date:4/17/2014)... International researchers, led by the Australian National University ... sea-level changes and deep-sea temperature variability over the ... scientists better understand the climate surrounding ice ages ... help determine the relationship between carbon dioxide levels, ... ANU, the University of Southampton (UoS) and the ...
Breaking Biology News(10 mins):Drought and fire in the Amazon lead to sharp increases in forest tree mortality 2Drought and fire in the Amazon lead to sharp increases in forest tree mortality 3New technique detects microscopic diabetes-related eye damage 2New technique detects microscopic diabetes-related eye damage 3Ancient sea-levels give new clues on ice ages 2
... LAFAYETTE, Ind. - Researchers have invented a technique that ... medical diagnostics and chemical analysis. The innovation represents ... use paper-strip assays like those that test for diabetes ... test strips you can measure things like pH or ...
... Charles Darwin based his groundbreaking theory of natural selection ... the key to evolution. Some individuals are better ... more likely to survive and pass on their genes ... in the first place still poses somewhat of a ...
... 25, 2011 The tiger reserves of Asia could support ... number if they are managed as large-scale landscapes that ... from some of the world,s leading conservation scientists finds. The ... first assessment of the political commitment made by all 13 ...
Cached Biology News:New lab-on-chip advance uses low-cost, disposable paper strips 2New lab-on-chip advance uses low-cost, disposable paper strips 3Evolution by mistake 2Evolution by mistake 3Evolution by mistake 4Study: Tiger numbers could triple if large-scale landscapes are protected 2Study: Tiger numbers could triple if large-scale landscapes are protected 3
Each 72-well MiniTray is low profile, with lid. Conical well shape, 10 l....
... C-1-tetrahydrofolate synthase, cytoplasmic ... Methylenetetrahydrofolate dehydrogenase (EC ... (EC 3.5.4.9); Formyltetrahydrofolate ... [Source:Uniprot/SWISSPROT;Acc:P11586] ...
Request Info...
Lipid-rich bovine serum albumin for cell culture (1). It is chromatographically purified and has an IgG content 0.1% (w/w)....
Biology Products: