• generally:

Visualization of the temperature development: https://climate.abteil.org/station/24267

Calculate Flight Emissions: https://www.atmosfair.de/en/offset/flight/

Climate migration: If you have nothing, you have nothing to lose: https://www.nytimes.com/interactive/2020/07/23/magazine/climate-migration.html
 

• Calculation tools:

Online Calculator Statistics and Probability: https://stattrek.com/

Webplotdigitizer: https://apps.automeris.io/wpd/

Curve interpolation online: https://mycurvefit.com/

Calculation of the position of the sun: https://www.sunearthtools.com/dp/tools/pos sun.php?lang=de

Fluid Property Calculator: https://web1.hszg.de/thermo fpc/

Linear Interpolation online:  https://www.johndcook.com/interpolator.html

Online Calc Dampf: https://www.peacesoftware.de/einigewerte/wasser dampf.html

Online function plotter: http://www.fooplot.com
 

• Information on energy networks:

Why is the mains frequency of the electricity grids at 50 hertz? https://www.vde.com/de/etg/arbeitsgebiete/informationen/2014-1-h1-neidhoefer-frequenz

Current grid frequency: https://www.netzfrequenz.info/aktuelle-netzfrequenz-full

The European transmission network: https://www.entsoe.eu/data/map

Wide Area Monitoring System, Transmission angle in Europe: https://www.swissgrid.ch/de/home/operation/grid-data/current-data.html#wide-area-monitoring

Network frequency in Ireland: http://smartgriddashboard.eirgrid.com/#all/frequency

Generation mix in Germany: https://www.energy-charts.de/power_de.htm
 

• Technical Informations:

Engineering Thermodynamics – A Graphical Approach: https://www.ohio.edu/mechanical/thermo/

Current CO2 concentration: https://www.co2.earth/daily-co2

Terms of earthing technology: https://elibsys.com/Aktuelles_-_Service/Begriffe_der_Erdungstechnik/begriffe_der_erdungstechnik.html

Paradoxes of Probability: http://daviddeley.com/random/probprdx.htm#PROBPRDX

Erklärungen zur technischen Thermodynamik: https://www.ahoefler.de/maschinenbau/thermodynamik-waermelehre.html

Engineering Statistic Handbook: https://www.itl.nist.gov/div898/handbook/index.htm

Windows keyboard shortcut: https://infothek.rotkel.de/tastaturkuerzel/mathematische-zeichen/haeufig-verwendete-zeichen.html

Description nuclear plant with pressurized water reactor (German): https://www.kkg.ch/de/i/anlage-_content---1--1026.html

IEC Electropedia: The World's Online Electrotechnical Vocabulary: http://www.electropedia.org/