background preloader

Student science experiment finds plants won't grow near Wi-Fi router

Student science experiment finds plants won't grow near Wi-Fi router
Five ninth-grade young women from Denmark recently created a science experiment that is causing a stir in the scientific community. It started with an observation and a question. The girls noticed that if they slept with their mobile phones near their heads at night, they often had difficulty concentrating at school the next day. They wanted to test the effect of a cellphone's radiation on humans, but their school, Hjallerup School in Denmark, did not have the equipment to handle such an experiment. So the girls designed an experiment that would test the effect of cellphone radiation on a plant instead. The students placed six trays filled with Lepidium sativum, a type of garden cress, into a room without radiation, and six trays of the seeds into another room next to two routers that according to the girls' calculations, emitted about the same type of radiation as an ordinary cellphone. Over the next 12 days, the girls observed, measured, weighed and photographed their results. Related:  ScienceLesson Ideas to Develop

science/Pages/Elementary-Resources.aspx Sign In Science Elementary Resources Houghton Mifflin Harcourt Science Fusion Consumable FCAT Explorer Information about the FCAT Released Tests Frequently Asked Questions Regarding FCAT CPALMS: www.floridastandards.org FCAT: www.fcatexplorer.com FOCUS: www.florida-achieves.com Scientific Process SCIENCE GAMES:Science GamesMore Science Games Who's My Mom? Students will identify and match animal offspring to their parents, recognize characteristics that distinguish one animal from another, create an imaginary animal and its offspring, and sort and graph animals according to their characteristics. 3-5 Activity Mini-Metric Olympics Students will become familiar with metric units by estimating and measuring in a "Metric Olympics" setting. 6-9 Activity Chromatographic Circles Students will identify the colors that make up black ink in a water-soluble pen, and identify how chromatography can be used to separate a mixture.

Bees May Use Electricity to Communicate | Wired Science The electric fields that build up on honey bees as they fly, flutter their wings, or rub body parts together may allow the insects to talk to each other, a new study suggests. Tests show that the electric fields, which can be quite strong, deflect the bees’ antennae, which, in turn, provide signals to the brain through specialized organs at their bases. Scientists have long known that flying insects gain an electrical charge when they buzz around. That charge, typically positive, accumulates as the wings zip through the air—much as electrical charge accumulates on a person shuffling across a carpet. And because an insect’s exoskeleton has a waxy surface that acts as an electrical insulator, that charge isn’t easily dissipated, even when the insect lands on objects, says Randolf Menzel, a neurobiologist at the Free University of Berlin in Germany. Now, in a series of lab tests, Menzel and colleagues have studied how honey bees respond to electrical fields.

Great Unsolved Mysteries in Canadian History New Discovery: NASA Study Proves Carbon Dioxide Cools Atmosphere A recent NASA report throws the space agency into conflict with its climatologists after new NASA measurements prove that carbon dioxide acts as a coolant in Earth's atmosphere. NASA's Langley Research Center has collated data proving that “greenhouse gases” actually block up to 95 percent of harmful solar rays from reaching our planet, thus reducing the heating impact of the sun. The data was collected by Sounding of the Atmosphere using Broadband Emission Radiometry, (or SABER). SABER monitors infrared emissions from Earth’s upper atmosphere, in particular from carbon dioxide (CO2) and nitric oxide (NO), two substances thought to be playing a key role in the energy balance of air above our planet’s surface. The shock revelation starkly contradicts the core proposition of the so-called greenhouse gas theory which claims that more CO2 means more warming for our planet. As NASA's SABER team at Langley admits: As the SABER research report states: [2] Brooks, C.E.P. (1951).

There is No Mistaking The Evidence, Cannabis Cures Cancer Cannabis is one of the most powerful healing plants in the world and it makes cancer essentially disappear. Cannabis compounds are responsible for halting the growth factors that are responsible for metastatic growth. Although there has been scientific evidence that marijuana can shrink and even kill tumors since the 1970s, much of the recent public interest in this research has been inspired by Run From The Cure, a documentary about a Canadian man who claims that the concentrated oil from the cannabis plant has cured his skin cancer. He then tries the cure on a number of other cancer victims in his community with similar results. Researchers have now found that the compound, called cannabidiol, has the ability to ‘switch off’ the gene responsible for metastasis in an aggressive form of breast cancer. A team from the California Pacific Medical Center, in San Francisco, first spotted its potential five years ago, after it stopped the proliferation of human breast cancer cells in the lab.

What is A Planet? What is A Planet? Description What is a planet? One such celestial object is Pluto, which became the 9th planet in 1930 to much controversy. Much like other sciences, such as Biology, where one may discover a new species, classification is a common and needed process which groups like objects for purposes of comparison and further study. Using 3D animation, this DVD was created to better illustrate the history behind the discussion defining “What is a Planet?” So come travel with us as we drive along the “Kuiper Belt highway” at 100 mph to explore the far reaches of our solar system and discover how vast our corner of the galaxy really is. Awards Second Edition delivered October 2010 2010 Television, Internet, Video Association of DC (TIVA-DC) Peer Awards Silver Classic Award Bronze Classic Award 2008 Telly Awards (Silver is the highest award) Silver Category: Animation Silver Category: TV Information Silver Category: Education Bronze Category: Information Bronze Category: Education Video

Is Wi-Fi Safe for Children?: Studies on Biological and Cellular Damage by Microwave & Radiofrequency Radiation New Studies Show Laptops and Cellphones Adversely Affect Children and FetusesUSA - Yale UniversityFetal Radiofrequency Radiation Exposure From 800-1900 Mhz-Rated Cellular Telephones Affects Neurodevelopment and Behavior in Mice “Here we demonstrate that fetal exposure to 800–1900 Mhz-rated radiofrequency radiation from cellular telephones leads to behavioral and neurophysiological alterations that persist into adulthood...The significant trend between the groups treated for 0, 9, 15, and 24 hours/day demonstrates that the effects are directly proportional to usage time... ” ITALY Dept of Pediatrics, Obstetrics and Reproduction Medicine, University of Siena.ASL 7 (Local Health Agency), Prevention Dept Physical Agents Laboratory, Siena.CNR (Italian Research Council), Institute of Applied Physics (IFAC), Florence, Italy.Exposure to Electromagnetic Fields From Laptop Use of “Laptop” Computers Exposure to Electromagnetic Fields From Laptop Use of “Laptop” Computers M. Havas, J. N. Dr.

Spies in the shadows Beautiful physics: Tying knots in light New research published today seeks to push the discovery that light can be tied in knots to the next level. Dr Anton Desyatnikov from the Nonlinear Physics Centre at The Australian National University is part of an international team of scientists who are designing knots in light, with potential applications in advanced modern optics, laser beams and even quantum computing. Using concepts from mathematics and physics the model Dr Desyatnikov and his colleagues have explored creates optical vortices with dark cores in a bright laser beam, that can then tangle and form links and knots. "Apart from their curiosity value, what's really interesting and useful about these knots of darkness is that they show you what the power flow is doing," Dr Desyatnikov said. "It is part of the incredible progress science is making in the field of optics, we're beginning to do things with light that would have once seemed impossible." "However unlike electrical cables which love to form knots, light doesn't.

The many uses for Apple Cider Vinegar There are approximately 8 bajillion uses for apple cider vinegar. Although, to be perfectly honest I really hated the stuff for a long time. My first experience with apple cider vinegar (or ACV as the cool kids call it) was during my college days when I was attempting to get rid of a little wart on my toe. I kept gagging at the smell. My how things change. Now I gag on the smell of fake perfumes, toxic cleaners, and baby diapers. What is Apple Cider Vinegar Apple cider vinegar is a type of vinegar made from cider or apple must and has a pale to medium amber color. Most people are familiar with ACV as an ingredient to be used in salad dressings, marinades, vinaigrettes, food preservatives, chutneys, etc. Uses for Apple Cider Vinegar Internal Health Let’s talk internal health, first. To take orally, simply mix 1 – 2 tablespoons of apple cider vinegar into a cup of filtered water (or you could mix it with herbal tea). Of course, you can add ACV into salad dressings. Beauty Home

How Big is the Solar System? Copyright 1989 by Guy Ottewell Universal Workshop PO Box 102 Raynham, MA 02767-0102 Toll Free: 800-533-5083 Fax: 508-967-2702 Email: customerservice@universalworkshop.com This is a classic exercise for visualizing just how BIG our Solar System really is. Both the relative size and spacing of the planets are demonstrated in this outdoor exercise, using a mere peppercorn to represent the size of the Earth. Introduction Can you picture the dimensions of the solar system? Probably not, for they are of an order so amazing that it is difficult either to realize or to show them. You may have seen a diagram of the Sun and planets, in a book. The fact is that the planets are mighty small and the distances between them are almost ridiculously large. The following exercise could be called a Model, a Walk or a Happening. There is one other party that may profitably take the planet-walk, and that is yourself, alone. First, collect the objects you need. This peppercorn is the Earth we live on. Follow-up

Related: