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Physics is becoming too difficult for the physicists.
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@Chrishamper 17 Mar 17:01RT @TOKtweet: Beta version of Chris Hamper's amazing Physics website for IBDP students now out. Great for revision - & FREE - https://t.co/…
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The whole course can be delivered through the activities on this website, Chris has been doing it this way for some years. Here is his teaching order. MechanicsActivity: Measurement and uncertaintyIn this practical the mass and diameter of different balls of Plasticine will be measured in order to verify that the mass of a sphere is proportional to the cube of its diameter. This is a simple...
AimsDefine capacitance.Investigate the factors affecting the capacitance of a parallel plate capacitor.Understand the effect of area, separation and dielectric on capacitance.Derive equations for capacitors in series and parallel.Solve problems with capacitor combinations.Capacitance (C)First let us consider a metal sphere.If charge is added what happens to the potential of the surface of the sphere?Write...
Amtul asked how to measure angles on a digital photo of light reflecting off a curved mirror, here's how to do it in GeoGebra.First I insert the image (a screen shot from Algodoo). Then make it the background (right click object properties). Then I made a circle and adjusted it so that it gave the centre of curvature. A line was placed to act as a normal. The angles can then be measured with angle...
AimsUnderstand how an alternating current is induced in a rotating coil.Derive an equation for the EMF in a rotating coil.Understand why AC power = IrmsVrms .Explain the operation of a transformer.Solve ideal transformer problems.understand why transformers are used in power transmission.The rotating coilIn this section we will be considering a rectangular coil rotating in a uniform magnetic field,...
This topic is the first in the Subject Guide, and there are some aspects that will need to be tackled before your students can commence other physical concepts. For students who have not studied physics recently or ever before, they should become familiar with taking measurements, identifying the uncertainties associated with data and learn the techniques for adding vectors. In this section of the website, you will also find a 'Mini Investigation'. This can be an engaging way to introduce students to the IA, perhaps after completing Mechanics.
AimsIntroduce the idea of a research question.Use knowledge of mechanics to develop a hypothesis.Use practical skills to design an experiment to test a hypothesis.Use "detective" skills to evaluate results.Practice writing a formal report.IntroductionIn this activity you will perform an experiment related to a small bow and arrow made from a piece of plastic from an ice cream carton and...
A well planned site with lots of informations in Physics!
I was new to teaching IB and moved to a brand new school with no other Physics teacher and no resources at all... With the huge help from the InThinking Physics site I was able to put in place a course with no problems at all. It has been like having...
InThinking site for IB physics is a wonderful resource to learn and teach IB physics effectively. I have been trained mostly through Chris Hampers' ideas and innovations on this site. I couldn't have made it without this resource. Thank you for making...
25 September 2019
Amtul asked how to measure angles on a digital photo of light reflecting off a curved mirror, here's how to do it in GeoGebra.First I insert... more
13 Oct Chris Hamper
Wave nature of matterStrange. The D-G experiment definitely uses the maximum but 2dsintheta instead of d. I reckon they are expecting students to use the single slit formula even though they use d and not b. Would be interesting to know what alternative answers...
13 Oct David Hawthorn
Wave nature of matterA beam of electrons each of de Broglie wavelength 2.4 x10^-15m is incident on a thin film of silicon-30. The variation in the electron intensity of the beam with scattering angle is shown [standard Davisson-Germer experiment graph shown but...
12 Oct Chris Hamper
Wave nature of matterHi David; Reading what I wrote on p289 I can see that it might lead to some confusion as I mention the pattern looks like that made by a circular aperture then use the diffraction grating equation. A full understanding of the Davisson - Germer...
11 Oct Chris Hamper
Wave nature of matterI am at the airport with only my phone. I’ll get back to you when I’m home.
10 Oct David Hawthorn
Wave nature of matter"Describe the two slit experiment for electrons." I'm a bit confused about this after reading the markscheme for 2019 TZ1 HL paper 2 Q2a)i) The markscheme uses the angle for a minimum intensity rather than a maximum intensity. The syllabus...
8 Oct Chris Hamper
Ideas for investigationsYeah should be ok.
8 Oct Chris Hamper
Individual investigationCould be ok but would need to define efficiency. Do they have a model car with at least 5 different sizes of wheel.
6 Oct Amtul Qayyum
Ideas for investigationsInstead of the ball can he use a square sheet.
6 Oct Amtul Qayyum
Individual investigationChris one of my student would like to do an IA on "Does the radius of a car tyre affect its efficiency?" Will that make a good IA?
1 Oct Chris Hamper
solutionsThanks Roberta, now fixed.
1 Oct Roberta Rodriquez
solutionsHi Chris, the link above doesn't work, but this does
27 Sep Chris Hamper
Practical: Speed of sound (drinking straw)I'm afraid not. Maybe I'll make one :-)