Navigation Links
Scientists discover why buttercups reflect yellow on chins
Date:12/13/2011

Scientists have found that the distinctive glossiness of the buttercup flower (Ranunculus repens), which children like to shine under the chin to test whether their friends like butter, is related to its unique anatomical structure. Their findings were published today, 14 December, in the Royal Society journal Interface.

The researchers discovered that the buttercup petal's unique bright and glossy appearance is the result of the interplay between its different layers. In particular, the strong yellow reflection responsible for the chin illumination is mainly due to the epidermal layer of the petal that reflects yellow light with an intensity that is comparable to glass.

Scientists have been interested in how the buttercup flower works for over a century. They have previously shown that the reflected colour is yellow due to the absorption of the colours in the blue-green region of the spectrum by the carotenoid pigment in the petals. As the blue-green light is absorbed, the light in the other spectral regions (in this case, primarily yellow) is reflected. It has also been known for many years that the epidermal layer of the petals is composed of very flat cells, providing strong reflection.

This new study shows how the buttercup's exceptionally bright appearance is a result of a special feature of the petal structure. The epidermal layer of cells has not one but two extremely flat surfaces from which light is reflected. One is the top of the cells, the other exists because the epidermis is separated from the lower layers of the petal by an air gap. Reflection of light by the smooth surface of the cells and by the air layer effectively doubles the gloss of the petal, explaining why buttercups are so much better at reflecting light under your chin than any other flower.

The researchers also found that the buttercup reflects a significant amount of UV light. As many pollinators, including bees, have eyes se
'/>"/>

Contact: Genevieve Maul
Genevieve.maul@admin.cam.ac.uk
44-122-376-5542
University of Cambridge
Source:Eurekalert

Page: 1 2

Related biology news :

1. Scientists forecast crops that adapt to changing weather
2. Wheat cant stop Hessian flies, so scientists find reinforcements
3. Babies born with no eyes: Scientists identify genetic cause
4. Max Planck Florida Institute scientists create first realistic 3D reconstruction of a brain circuit
5. UCSB scientists make advances in neuroscience and vision research
6. Scientists discover how brain corrects bumps to body
7. Scientists rediscover rarest US bumblebee
8. EMBO awards Installation Grants to 7 European scientists
9. Singapore and China scientists perform first Asian genome-wide association study on spine disease
10. AGU meeting: Stanford scientists subject rocks to hellish conditions to combat global warming
11. Some atheist scientists with children embrace religious traditions, according to new Rice research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2015)... , Mar. 24, 2015 Research and Markets ... and Voice Biometrics - Global Strategic Business Report" report to ... Face and Voice Biometrics in US$ Thousands by the following Segments: ... for the US, Canada , Japan ... , Middle East & Africa ...
(Date:3/24/2015)... GARDENS, Fla. , March 24, 2015 /PRNewswire/ ... identity management solutions, today announced that its U.are.U ... clothing accessory retailer Goorin Bros . to ... Crossmatch biometrics-based solution secures access to the POS ... the increased risk of data breaches. ...
(Date:3/23/2015)... 23, 2015   HOYOS Labs , a leading ... announced that the Company will demonstrate multiple biometrics-based technologies ... consumers at Connect:ID on March 23 through 25, 2015, ... will highlight the IEEE Biometric Open Protocol Standard; free ... enterprise access control system. BOPS was invented by HOYOS ...
Breaking Biology News(10 mins):Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3
... potential for preventing cardiomyopathy, a form of heart disease that ... scientists have concluded in a new study. Their report, which ... for diabetic cardiomyopathy, appears in ACS, bi-weekly Journal of ... note that people with diabetes have at least twice the ...
... of up to 4.2 C and the end of ... are not revised in the Copenhagen Accord, the international pledge ... conference. Just ahead of the next United ... Tianjin, China, a new report published today, Wednesday, 29 September, ...
... 2010) "Migraine feels like God just punched you in ... his interview on the American Migraine Foundation,s (AMF) new podcast ... crisis." In the interview AMF,s president Barry Baumel MD, ... pain of migraine, how not to be a "nave" patient, ...
Cached Biology News:Climate accord loopholes could spell 4.2-degree rise in temperature and end of coral reefs by 2100 2American Migraine Foundation launches new podcast series 2
(Date:5/1/2015)... , May 1, 2015 ... equities: Genetic Technologies Ltd (NASDAQ: GENE ), ... Fisher Scientific Inc. (NYSE: TMO ), Sequenom ... (NYSE: PKI ). Free research report on ... . On Thursday, April 30, 2015, the NASDAQ ...
(Date:5/1/2015)... -- According to a new market ... by Type (Monoclonal, Polyclonal), by Technology (Hybridoma), by ... Analysis & Global Forecast to 2019", published by ... Market for the forecast period of 2014 to ... Billion by 2019 from $1.425 Billion in 2014, ...
(Date:4/30/2015)... Spirax Sarco, the leader in product ... announce that for the first time in the company’s ... a Queen’s Award for Innovation – the UK’s highest ... of a unique flowmeter. , The Spirax Sarco ... steam flow measurement. The device provides reliable, accurate ...
(Date:4/30/2015)... DIEGO , April 30, 2015   Tamir ... announced today an update on its Ebola antiviral therapy ... Tamir,s leading candidates, TMR004, is currently being evaluated and ... of the battle against Ebola. During the first quarter ... And Leadership Meeting To Accelerate The Evaluation of Potential ...
Breaking Biology Technology:Life Sciences Tools and Services Stocks on our Radar -- Genetic Technologies, Agilent Technologies, Thermo Fisher Scientific, Sequenom, and PerkinElmer 2Life Sciences Tools and Services Stocks on our Radar -- Genetic Technologies, Agilent Technologies, Thermo Fisher Scientific, Sequenom, and PerkinElmer 3Life Sciences Tools and Services Stocks on our Radar -- Genetic Technologies, Agilent Technologies, Thermo Fisher Scientific, Sequenom, and PerkinElmer 4Life Sciences Tools and Services Stocks on our Radar -- Genetic Technologies, Agilent Technologies, Thermo Fisher Scientific, Sequenom, and PerkinElmer 5Antibody Production Market worth $2.572 Billion by 2019 2Antibody Production Market worth $2.572 Billion by 2019 3Antibody Production Market worth $2.572 Billion by 2019 4Spirax Sarco Receives a Queen’s Award for Innovation 2Spirax Sarco Receives a Queen’s Award for Innovation 3Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 2Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 3Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 4
... Immunotech Laboratories (Pink Sheets: IMMB) is happy ... potential venture for South America, headquartered in Mexico. ... Laboratories, the potential outcome from these discussions, will ... and position the company for a viable regional ...
... FRANCISCO, April 3 VIA Pharmaceuticals, Inc. (Nasdaq: ... development of compounds for the treatment of cardiovascular and ... letter, dated March 31, 2009, from the staff of ... does not currently comply with NASDAQ Marketplace Rule 4310(c)(3). ...
... to leverage technologies for PACS data disaster recoveryCHICAGO, April ... business unit of Siemens Healthcare ( ... Corporation ( www.harris.com ... solutions critical for Picture Archiving and Communication Systems (PACS) ...
Cached Biology Technology:Immunotech Laboratories Announces South American Strategy 2VIA Pharmaceuticals Receives Anticipated Notice From NASDAQ 2VIA Pharmaceuticals Receives Anticipated Notice From NASDAQ 3VIA Pharmaceuticals Receives Anticipated Notice From NASDAQ 4Siemens Healthcare Announces Planned Collaboration with Harris Corporation 2Siemens Healthcare Announces Planned Collaboration with Harris Corporation 3Siemens Healthcare Announces Planned Collaboration with Harris Corporation 4
Collected from sexually matured, mixed breed, mixed sex guinea pigs....
Silica bead method is an economic method of DNA extraction from agarose...
...
...
Biology Products: