In The Land Of The Northern Lights Ok folks, this is it. Here is my first video project. It...

Truly amazing time-lapse photography of the "Northern Lights"! 6 mnths and 50k photos! A MUST SEE!! http://ow.ly/4s044 #physics150 #astro101

#physics150 HWK 7 posted on blackboard this afternoon! Due 4/1 #JMU

Making government services easier to find | USAGov Find government benefits, services, agencies, and informa...

Hey #physics150: Another X-class solar flare and coronal mass ejection leads to auroras across the northern U.S. http://1.usa.gov/etK4a2

@jayyhlee this is really cool! thanks for sharing! #physics150 is everywhere!

#physics150 @ #JMU: HWK 5 is now due 3/2 @11pm on #loncapa. Test 2 has been moved to 3/22 and will cover ch 18,19,20.

@jayyhlee right eqn, now use the principle of superposition ie add the magnetic fields given the distances to P for each wire. #physics150

SDO | Solar Dynamics Observatory SDO is designed to help us understand the Sun's influence...

#physics150 RT @BadAstronomer Incredible hi-res movies of the solar flare are on NASA's SDO site: http://is.gd/wpk11b I do mean INCREDIBLE.

Have a hard time visualizing sizes in #astro101 or #physics150 check out: http://www.youtube.com/watch?v=HEheh1BH34Q

#physics150 students at #jmu: HWK 5 has just been posted. Due date 2/28 at 8pm.

#physics150 HWK 4 has been extended a day. Now due 2/17 at 11pm. Reading quiz also online now. #jmu

#physics150 : there will be no class today! HWK 4 has been posted and is due next week!

#physics150 class: slides for Ch. 18-21 are now posted! #jmu

@jayyhlee no. I’ve checked the text as well as online. quick google search didn’t turn up anything. will try for later chapters #physics150

#physics150 students: the solution set to HWK 3 is now available on blackboard!! #jmu

@jayyhlee for 16, lookup eqn 18-3. Then ask: how are speed, distance and time related! for 23, lookup eqn 18-8 & form a ratio! #physics150

@ERiN_SCHMiTT Have a look at eqn 17-10 and then remember how F and E are related: F = qE. Combine these 2 eqns to solve for q. #physics150

HWK 2 posted on LON-CAPA. Due 1/25 @ 11pm. #physics150

Solution set to HWK 1 available on blackboard. #physics150