Heating 100ml water with a 2W resistor based element, how close can I get with the well known heat transfer formula?

As it turns out, quite close, I calculated 1.71W which is 16% off 👌🏻🙂

I’m using my #keithly #sourcemeter as a calibrated supply, so the two #eevblog multimeters, measuring heating element voltage and current, aren’t really needed. They’re mostly there for display and bling, however doing this experiment with a regular bench supply, you would need them 🙂
Multiplying the two measured values gives a quite satisfying result though, you should try it 😃

I’m done with #calorimeter experiments for now, other exiting things are queued up in my little lab 🙂

#stem #stemeducation #physics #engineer #electronics #testansmeasurement

I ended up ordering a more suitable #calorimeter, I want to repeat my previous test with better accuracy.

My #keithly #sourcemeter really is a nice companion when doing things like this, I designed a new resistor heating element meant to run at a higher voltage and I get a precise reading of the power dissipated 👍🏼 Many bench supplies will do this too, but not at the same accuracy.
And accuracy is what I’m looking for in this setup.

The calorimeter was reasonably cheap at Amazon and shipment took 5days including the weekend.

Stay tuned 👌🏻🙂

#stemeducation #stem #engineering #physics #testandmeasurement

I built a simple #calorimeter and used it to prove that an arbitrary AC signal will heat a resistor equally compared to a DC signal with the same amplitude as the RMS amplitude of the AC signal 🤓
This a fundamental rule and the reason we universally use RMS to describe any AC signal amplitude: by the end of the day, everything revolves around power transfer.
A funny experiment involving many interesting disciplines: temperature measurement, building a small heating element, basic math/physics and some basic measurement techniques.
#stem #stemeducation #electronics #physics #engineer #testandmeasurement #siglent

Let's see if we can get that beast (H1 SpaCal ECAL) back to life after sitting in an exhibition for 15 years. It looks so beautiful! But it will certainly need some shiny new readout electronics... #Calorimeter #ParticlePhysics

#introduction

I'm a professor for #ParticlePhysics at the Karlsruhe Institute of Technology (#KIT).

I am interested in searches for #BSM and #DarkMatter at colliders and beam dumps, and i am recently developing a taste for direct detection experiments as well.

I love #coding for the #Belle2 #calorimeter and for #RealTime algorithms; with and without #MachineLearning.