what is a wormhole?

Wormholes are solutions to the Einstein field equations for gravity that act as "tunnels," connecting points in space-time in such a way that the trip between the points through the wormhole could take much less time than the trip through normal space.

The first wormhole-like solutions were found by studying the mathematical solution for black holes. There it was found that the solution lent itself to an extension whose geometric interpretation was that of two copies of the black hole geometry connected by a "throat" (known as an Einstein-Rosen bridge). The throat is a dynamical object attached to the two holes that pinches off extremely quickly into a narrow link between them.

This analysis forces one to consider situations...where there is a net flux of lines of force through what topologists would call a handle of the multiply-connected space and what physicists might perhaps be excused for more vividly terming a ‘wormhole’.

John Wheeler in Annals of Physics

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Monday, April 30, 2012

101 Ways to Cope with Teaching Stress By Britney Wilkins

Teachers have one of the most stressful jobs, despite their long vacations. Besides being responsible for large groups of hormonal or destructive students all day, teachers also have to abide by strict government and school district guidelines, attend after-hours workshops and meetings, call parents, submit lesson plans early on, worry about school security and put up with loads of homework thanks to grading, grant writing and certification renewal classes. To help teachers cope with all of this stress, we’ve compiled a list of over 100 different ways you can relax and get centered, whether you’re in the middle of a lecture or already home and trying to forget about your hectic day.
Health Habits
Staying in good health greatly affects your stress levels and helps you cope with anxiety and long days.
  1. Stop smoking: That little buzz you get from a cigarette may calm you down temporarily, but the nicotine that’s blowing into your system will actually make you jumpy and overalert. In the long run, that’s not good news for your stress levels.
  2. Minimize your caffeine: Teachers may thrive on coffee breaks, but consider cutting back to just a couple of cups a day. Even better would be to substitute at least one cup of coffee or soda for green tea. The tea can boost your immune system and contains less caffeine than coffee.
  3. Eat breakfast: Eating a good breakfast not only boosts your metabolism, it also keeps you focused so that you’re more productive throughout the entire day.
  4. Snack right: It’s easy to grab whatever snacks are in the vending machines or school cafeteria, but it’s also important to eat right while you’re at school. Physically, a diet of fatty, greasy foods will make you feel weighted down, bloated and tired, while your emotional state may be at risk too if you feel guilty about wrecking your diet.
  5. Set realistic goals: As a teacher, it’s easy to get caught up in saving your at-risk students from failure or sponsoring every club each semester. Set realistic goals for yourself and you’ll be able to find a less stressful balance.
  6. Visit the guidance counselor: If your school’s counselor isn’t a mental health professional, he or she may still be able to refer you to a local psychologist. Even if you aren’t suffering from depression, talking things out with an unbiased medical professional is therapeutic.
  7. Cut back on worryingWorrying takes up too much time and energy; plus, it makes you even more stressed about things that aren’t in your control.
  8. Open up the windows: When it’s nice outside, open up the windows to give you and your students a rejuvenating breath of fresh air. Sunlight will also improve your mood, so even if your windows don’t open, crack open the blinds.
  9. Aromatherapy: You can use this recipe for aromatherapy bath salts at home or at school. Just one whiff will help you feel relaxed and back in control.
  10. Practice anger management: Even teachers with the purist of hearts sometimes can’t wait to send their students home for the day. Practice these anger management tips to prevent yourself from totally losing it.
Goodies for your Desk
Keep a stash of healthy snacks, photos, and even stickers in your desk when you need to indulge between classes and remind yourself what you’re working for.
  1. Chocolate: Sneak a little piece of chocolate once or twice a day to give your brain a boostof endorphins and indulge your sweet side. Dark chocolate is supposedly the best.
  2. Stickers: Stickers are just for the kids, right? Keep your own sticker sheet or rewards card and give yourself a sticker every time you handle a crisis in the classroom or finish the week on a good note.
  3. Favorite tools: Your supplies drawer for the students can have a mish mash of pens, crayons, scissors and notecards, but save the best for yourself in your locked drawer. Even something as simple as getting to write cards with your favorite colorful pens can make you feel better.
  4. Healthy snacks: Pack a survival kit full of healthy snacks before you leave for school each day, and you can munch and crunch away without feeling guilty. Many of these foods like almonds, baby carrots and tuna will also help your focus.
  5. Lunch menus for take-out: Some days you just need to treat yourself for lunch. Keep a stack of nearby restaurants that deliver healthy take-out meals and indulge yourself between the bells.
  6. Vacation calendar: Whether you’ve just highlighted all your vacation days on the school district calendar or you actually have a countdown to your next trip, sneak a peak at a vacation calendar to give yourself motivation.
  7. Goal presents: If tales of the greater good aren’t getting you through a really tough time, remind yourself of the practical reasons why you’re sticking with your job. Keep a picture from a catalog of the new shoes you’ll buy with your next paycheck, or the new TV you’re saving up for.
  8. Photos: Put pictures up of your friends, family and pets to make you feel close to yourpersonal life even when you’re at work.
  9. An organization system: A cluttered desk will make you feel stressed as you frantically look for lost papers, contact information and your stash of dark chocolates.
  10. Stress ball: Don’t underestimate the power of a stress ball. These days, they come in all kinds of funny shapes and characters, and a quick squeeze now and then can help you calm down.

Tuesday, January 17, 2012

Nidarshan - Exhibition on Dr.Sarvepalli Radhakrishnan

Official Website: nidarshan.sarvepalli.com
For more details Contact us at [email protected]

Collection of Books on Teaching Methods

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