Eine Molekülschwingung und ein Musikakkord unterscheiden sich physikalisch betrachtet kaum. Beide entstehen, wenn sich Schwingungen verschiedener Frequenzen überlagern. In der Musik sind das die Töne, aus denen sich der Akkord zusammensetzt. Bei Molekülen bezeichnet man diese Frequenzen als Quantenzustände. Forscher des Max-Planck-Instituts für Kernphysik haben jetzt erstmals die Quantenzustände eines Wasserstoffmoleküls genau bestimmt und hörbar (!) gemacht.
Pressemitteilung der Max-Planck-Gesellschaft
Kategorie: Forschung & Technik
British solar plane breaks longest unmanned flight record
A lightweight, solar-powered plane built by British defence and security technology company QinetiQ has broken a world record for unmanned flight by staying aloft for 54 hours. The Zephyr, which has an 18-metre wingspan and weighs just 30 kilogrammes, smashed the previous best of 30 hours 24 minutes by nearly a whole day, flying to a maximum height of 58.355 feet.
QinetiQ’s Zephyr UAV exceeds official world record for longest duration unmanned flight
Structure of ancient protein reveals evolution's steps
A detailed map that pinpoints the location of every atom in a resurrected ancient protein reveals the precise evolutionary steps needed to create the molecule’s modern version.
Structure of 450 million year old protein reveals evolution’s steps
Crystal Structure of an Ancient Protein: Evolution by Conformational Epistasis
First genome transplant changes one species into another
For the first time, scientists have completely transformed a species of bacteria into another species by transplanting its complete set of DNA.
JCVI Scientists Publish First Bacterial Genome Transplantation Changing One Species to Another
Storing Power In A Sheet Of Paper
Researchers at Rensselaer Polytechnic Institute have developed a new energy storage device that easily could be mistaken for a simple sheet of black paper. The nanoengineered battery is lightweight, ultra thin, completely flexible, and geared toward meeting the trickiest design and energy requirements of tomorrow’s gadgets, implantable medical equipment, and transportation vehicles.
Dänische Forscher spielen Wikinger
Mit einem nachgebauten Wikinger-Schiff werden dänische Historiker und Archäologen in Irland erwartet. Die Forscher sind seit sechseinhalb Wochen unterwegs, um eine Reise zwischen dem dänischen Roskilde über Norwegen zum irischen Dublin nachzuvollziehen. Das Original ihres Langschiffes aus dem 11. Jahrhundert war nachweislich in Dublin gebaut worden, und ging Jahre später in Dänemark vor Anker. Auf der Reise, die langsamer voran ging als erwartet, studierten die Forscher historische Segeltechniken.
Realistic fluid special effects in 3D
Researchers led by Dr. Mahesh Prakash from CSIRO have developed innovative fluid special effects software. A short video of the software’s rendition of rolling waves, sudden flooding and pouring beer is available on the following website:
Fluid Solver: fluid simulation for motion picture special effects
Solar cell can be printed on plastic sheets
Researchers at New Jersey Institute of Technology (NJIT) have developed an inexpensive solar cell that can be painted or printed on flexible plastic sheets.
https://web.archive.org/web/20181022070106/http://www6.njit.edu/features/innovations/som-mitra.php
Pharaoh DNA Analysis
Preliminary results from DNA tests carried out on a mummy believed to be Queen Hatshepsut is expected to support the claim by Egyptian authorities that the remains are indeed those of Egypt’s most powerful female ruler.
Egyptologists in Cairo announced last month that a tooth found in a wooden box associated with Hatshepsut exactly fitted the jaw socket and broken root of the unidentified mummy. Now, Dr. Angelique Corthals, a biomedical Egyptologist at The University of Manchester, says that DNA tests she helped carry out with colleagues at the National Research Centre in Cairo have promising preliminary results suggesting the mummy is indeed the great queen Hatshepsut.
The team is now planning to carry out more tests on the 40 remaining royal mummies, including that of Tutankhamun, in order to resolve the many questions surrounding the genealogy of the 18th and 19th dynasties.
Manchester University helps with pharaoh DNA analysis
Evidence Of Very Recent Human Adaptation
A Cornell study of genome sequences in African-Americans, European-Americans and Chinese suggests that natural selection has caused as much as 10 percent of the human genome to change in some populations in the last 15.000 to 100.000 years, when people began migrating from Africa. For example, the researchers found evidence of recent selection on skin pigmentation genes, providing the genetic data to support theories proposed by anthropologists for decades that as anatomically modern humans migrated out of Africa and experienced different climates and sunlight levels, their skin colors adapted to the new environments.