Navigation Links
Can a drop of water cause sunburn or fire?
Date:1/10/2010

To the gardening world it may have always been considered a fact, but science has never proved the widely held belief that watering your garden in the midday sun can lead to burnt plants. Now a study into sunlit water droplets, published in New Phytologist, provides an answer that not only reverberates across gardens and allotments, but may have implications for forest fires and human sunburn.

"The problem of light focusing by water droplets adhered to plants has never been thoroughly investigated, neither theoretically, nor experimentally", said lead researcher Dr Gabor Horvath, from Hungary's Eotvos University. "However, this is far from a trivial question. The prevailing opinion is that forest fires can be sparked by intense sunlight focused by water drops on dried-out vegetation."

The team conducted both computational and experimental studies to determine how the contact angle between the water droplet and a leaf affects the light environment on a leaf blade. The aim was to clarify the environmental conditions under which sunlit water drops can cause leaf burn.

These experiments found that water droplets on a smooth surface, such as maple or ginkgo leaves, cannot cause leaf burn. However in contrast the team found that floating fern leaves, which have small wax hairs, are susceptible to leaf burn. This is because the hairs can hold the water droplets in focus above the leaf's surface, acting as a magnifying glass. The latter not only partly confirms the widely held belief of gardeners, but also opens an analogous issue of sunburn on hairy human skin after bathing.

"In sunshine water drops residing on smooth hairless plant leaves are unlikely to damage the leaf tissue", summarised Horvath and co-authors. "However water drops held by plant hairs can indeed cause sunburn and the same phenomenon can occur when water droplets are held above human skin by body hair."

While the same process could theoretically l
'/>"/>

Contact: Ben Norman
Benorman@wiley.com
44-124-377-0375
Wiley-Blackwell
Source:Eurekalert

Page: 1 2

Related biology news :

1. Glacial watersheds may contribute to oceanic food web
2. Lost water of the Napa Valley vineyards
3. Newly identified enzymes help plants sense elevated CO2 and could lead to water-wise crops
4. Lehigh University professor receives Astellas Award for arsenic groundwater remediation efforts
5. Canna can: Ornamental eliminates pollutants from stormwater runoff
6. Uniform analyses for clean drinking water in Europe
7. UGA researchers lead team in discovery involving devastating freshwater fish parasite, Ich
8. Just like old times: Generating RNA molecules in water
9. K-State program will give young professionals skills to protect water resources
10. Geologists studying groundwater arsenic levels in India empower Bengali women, children
11. UMCES researchers launch freshwater marsh study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/21/2014)... of the water window? It consists of radiations in ... absorbed by the water in biological tissues. New theoretical ... radiations within the water window. These could be the ... image of the biological samples or to be used ... the physical mechanism needed to efficiently generate the harmonic ...
(Date:8/21/2014)... by an international standards process, will be available soon ... invited review published in the OnlineFirst version of ... official journal of the American Society for Parenteral and ... the occurrence of misconnection that can be harmful and ... used to join medical devices, components, and accessories to ...
(Date:8/21/2014)... University have developed a novel and versatile modeling strategy ... creating new materials as well as for studying polyelectrolytes, ... us to model much larger and more complex polyelectrolyte ... Nan Li, lead author of a paper on the ... of Materials Science and Engineering. "This is a big ...
Breaking Biology News(10 mins):Water window imaging opportunity 2New feeding tube connectors will improve patient safety 2Researchers develop models to study polyelectrolytes, including DNA and RNA 2
... In 2007, researchers of the Max Planck Institute ... in exploratory behaviour in great tits. Birds with a ... (DRD4 gene) showed stronger novelty seeking and exploration behaviour ... tested and found in a lab-raised group of birds. ...
... , Some animals, it seems, are going on a ... these are reactions to rapidly rising temperatures due to ... Aviv University,s Department of Zoology, who has been measuring ... areas where climate change is most extreme. , Changes ...
... with anorexia nervosa, paradoxically, have strikingly high levels of fat ... Their findings, based on MRI imaging of the knees of ... same age, appear in the February issue of the ... that an emaciated young woman with almost no subcutaneous fat ...
Cached Biology News:Great tits: birds with character 2Animals cope with climate change at the dinner table 2Anorexics found to have excess fat-- in their bone marrow 2
(Date:8/22/2014)... ON , Aug. 22, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ... six month periods ended June 30, 2014.  Biorem,s complete 2014 second quarter ... Financial Summary:Three-months ended June 30, , Six-months ended ... , 2014 , 2013 , 2014 ... , 4,433 , 9,195 Gross profit , 56 ...
(Date:8/22/2014)... Ophthalmic drug delivery technologies or ... endeavors as the anatomy, physiology and biochemistry of ... foreign substances. Ocular drug delivery technologies provide several ... minimal use of needles; also it enables high ... specific targeting within the ocular globe. On the ...
(Date:8/22/2014)... 2014 Nerium International, the go-to, ... the spotlight again. Nerium will showcase its signature ... Body Contouring Cream to Hollywood’s elite at the ... the 66th Primetime Emmy® Awards. , Developed from ... clinical trials show that NeriumAD night cream dramatically ...
(Date:8/21/2014)... at the Institute for Molecular Medicine Finland (FIMM), ... developed a novel "man and machine" decision support ... aid was described in PLOS One ... based on computer vision algorithms similar to those ... of only the diagnostically most relevant areas. Tablet ...
Breaking Biology Technology:Biorem Reports 2014 Second Quarter Results 2Biorem Reports 2014 Second Quarter Results 3Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 2Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 3Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 4Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 2Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 3A novel 'man and machine' decision support system makes malaria diagnostics more effective 2
... N.Y., Jan. 31 Mr. Donald Fresne, ... that the company has recently,obtained from Harvard ... cover certain technologies related to cancer therapy ... developed jointly,by scientists in the Laboratory for ...
... VCs face more competition from private ... equity and hedge ... their investments to the greentech and biotech industries in the,coming year, ... a recent survey by the U.S. audit, tax and advisory,firm KPMG ...
... 31 Schering-Plough,Corporation (NYSE: SGP ) today ... has accepted the Peg-IFN (peginterferon alfa-2b),supplemental Biologics License ... status for the adjuvant treatment of patients with,Stage ... agency,in the fall of 2007., The Priority ...
Cached Biology Technology:Venture Capitalists Bullish on Greentech and Biotech, KPMG Study Says 2Venture Capitalists Bullish on Greentech and Biotech, KPMG Study Says 3FDA Grants Priority Review for Schering-Plough's Peginterferon Alfa-2b for the Adjuvant Treatment of Patients With Stage III Melanoma 2FDA Grants Priority Review for Schering-Plough's Peginterferon Alfa-2b for the Adjuvant Treatment of Patients With Stage III Melanoma 3FDA Grants Priority Review for Schering-Plough's Peginterferon Alfa-2b for the Adjuvant Treatment of Patients With Stage III Melanoma 4FDA Grants Priority Review for Schering-Plough's Peginterferon Alfa-2b for the Adjuvant Treatment of Patients With Stage III Melanoma 5FDA Grants Priority Review for Schering-Plough's Peginterferon Alfa-2b for the Adjuvant Treatment of Patients With Stage III Melanoma 6
... ProteinChip arrays have been developed for ... samples. A variety of ProteinChip chemical ... according to their unique biochemical properties. ... allowing side-by-side sample comparison, and the ...
The thermal printer, 120 V, is used to record fluorescence data acquired with the VersaFluor fluorometry systems. The printer includes a cable and power adaptor....
This thermal printer, 120 V, provides a permanent record of the preprogrammed method and run data for the PROTEAN IEF cell. Includes cable and power adaptor....
... iCycler thermal cycler with 384-well reaction module ... applications. It is equipped with an interchangeable, ... features algorithm temperature monitoring and control and ... sample volumes. It includes the iCycler base ...
Biology Products: