Tag Archive | simulation

Day 141: How Big is the Sun?


College-Prep Physics: It was sunny out today! So we poked a hole in the side of a copy paper box to make a pinhole camera. Aimed our cameras at the sun and measured the resulting image in order to determine the true size of the sun. The copy paper box worked beautifully: the sides with the hole and the screen are always parallel; it’s easy to aim the camera directly at the sun — lay box on ground and lift up/turn until box shadow is square; for the size of the box, the image of the sun is exactly 1/2 cm across (so it fits perfectly within 1/2 cm graph paper). We didn’t do anything fancy with foil like I’ve seen for other pinhole cameras on the internet. Should we have? Why?


Conceptual Physics: Students finished the diode circuit simulation activity from yesterday. One group came up with a possible bike generator circuit that will charge the battery and light the bulb while pedaling, and will also use the battery to light the bulb when the pedaling stops.

Day 140: Gravitational Force vs. Distance

College-Prep Physics: We were supposed to go out and explore pinhole cameras, but it was cloudy. So today we explored gravitational force with a sim from The Physics Classroom: http://bit.ly/gravitysim. Students are doing a similar analysis like they did with light intensity a few days ago. Handout here: ACTIVITY Universal Gravitation 2013

Conceptual Physics: I found a great circuit simulation which has diodes (PhET doesn’t have diodes): http://bit.ly/acdclab. Students explored diodes and AC circuits with this today. Hopefully it will allow them to understand diodes better and be able to come up with a draft of their modified bike light generator circuit. Handout here: DiodeCircuitSimLab2013

Day 130: Can a Magnetic Field Produce a Current?

Faraday's Electromagnetic Lab

Click to Run

Conceptual Physics:
Students experimented with a PhET simulation on electromagnetic induction. This was an activity that I created, which is strongly-based on a similar activity from Eugenia Etkina’s Active Physics Guide. You can download a copy here: Job 12.5A EM Induction PhET 2013

College-Prep Physics: Students wrapped up their scale models. One class got to present their models. The other class will present tomorrow.