about the Marvel Comics character the DC Comics character Spider Girl the second Marvel Comics character to be known as Spider Girl Anya Corazon Infobox comics character Wikipedia WikiProject Comics character name Spider Girl image Spider girl continues.jpg converted y caption Promotional art for The Amazing Spider Girl 1. Art by Ron Frenz . real name May Mayday Parker debut What If vol. 2 105 br February 1998 creators Tom DeFalco br Ron Frenz br Mark Bagley costume alliances A Next br Fantastic Five br New Warriors Alternate versions New Warriors aliases Spidey, Spider Girl Red powers Ability to stick to solid surfaces and repel objects and people. br Superhuman strength, durability, stamina, speed, agility, reflexes, and endurance br Precognitive Spider Sense br Bioelectromagnetism Bio magnetism manipulation, and the ability to sense the weak points in her enemies. cat super subcat Marvel Comics hero y sortkey Spider Girl Spider Girl May Mayday Parker is a superheroine in Marvel Comics Marvel Comics 2 MC2 universe. The character was created by Tom DeFalco and Ron Frenz as the teenage daughter of Spider Man and Mary Jane Watson , and first appeared in What If comics What If vol. 2 105 February 1998 . She later acquired her own ongoing comic book, Spider Girl , written by DeFalco and drawn by Frenz and Pat Olliffe , which was the longest running superhero book with a lead female character ever published by Marvel before being relaunched as The Amazing Spider Girl , and later The Spectacular Spider Girl . Peter and Mary Jane named their daughter after his Aunt May . Publication history Spider Girl first appeared in a one shot story in the ongoing series What If comics What If . Following positive fan response to the concept, Spider Girl and two other series A Next and J2 comics J2 set in the same alternate future universe were launched under the Marvel Comics 2 MC2 imprint. Although each of these titles were slated to be 12 issue limited series, Spider Girl s initial ... more details
File Onde electromagnetique.svg thumb 400px Electromagnetic waves can be imagined as a self propagating transverse oscillating wave of electric and magnetic fields. This diagram shows a plane linearly polarized EMR wave propagating from left to right. The electric field is in a vertical plane and the magnetic field in a horizontal plane. The two types of fields in EMR waves are always in phase with each other. Electromagnetism cTopic Classical electromagnetism Electrodynamics Electromagnetic radiation EM radiation or EMR is a form of energy emitted and absorbed by charged particles, which exhibits wave like behavior as it travels through space. EMR has both electric field electric and magnetic field components, which stand in a fixed ratio of intensity to each other, and which oscillate in phase perpendicular to each other and perpendicular to the direction of energy and wave propagation . In vacuum , electromagnetic radiation propagates at a characteristic speed, the speed of light . Electromagnetic radiation is a particular form of the more general electromagnetic field EM field that is defined as the field produced by moving charges. Electromagnetic radiation is associated with only the type of EM field which is far enough away from the moving charges that produced it, that absorption of the EM radiation no longer affects the behavior of these moving charges. These two types or behaviors of EM field are sometimes referred to as the near and far field . In this language, EMR is merely another name for the far field. Charges and currents directly produce the near field. However, charges and currents produce EMR only indirectly rather, in EMR, both the magnetic and electric fields are produced by changes in the other type of field, not directly by charges and currents. This close relationship causes the electric and magnetic fields in EMR to stand in a fixed ratio of strengths to each other, and to be found in phase, with maxima and nodes in each found at the same p ... more details
File Man speaking on mobile phone.jpg thumb A man speaking on a mobile telephone The effect of mobile phone radiation on human health is the subject of recent interest and study, as a result of the enormous increase in mobile phone usage throughout the world As of 2009 6 alt as of June 2009 , there were more than 4.3 billion subscriptions worldwide ref name GSM Association Market Data Summary cite web url http www.gsmworld.com newsroom market data market data summary.htm title Market Data Summary Q2 2009 publisher GSM Association accessdate 2010 01 30 ref . Mobile phones use electromagnetic radiation in the microwave range. Other Wireless electronic devices and health digital wireless systems , such as data communication networks, produce similar radiation. The World Health Organization WHO has classified mobile phone radiation on the International Agency for Research on Cancer IARC scale into List of IARC Group 2B carcinogens Group 2B possibly carcinogenic. That means that there could be some risk of carcinogenicity, so additional research into the long term, heavy use of mobile phones needs to be conducted. ref name WHO IARC 110531 cite press release url http www.iarc.fr en media centre pr 2011 pdfs pr208 E.pdf format PDF title IARC classifies radiofrequency electromagnetic fields as possibly carcinogenic to humans work World Health Organization press release N 208 publisher International Agency for Research on Cancer date 2011 05 31 accessdate 2011 06 02 ref Some national radiation advisory authorities ref name AustriaPrecaution cite web url http www.pressbaum.net wai startseite aktuelles handy.htm title Information Wie gef hrlich sind Handystrahlen wirklich? accessdate 2008 01 23 language German publisher Pressbaum Marktgemeinde Pressbaum ref have recommended measures to minimize exposure to their citizens as a precautionary principle precautionary approach . Effects Many scientific studies have investigated possible health symptoms of mobile phone radiation . T ... more details
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