Free 3D modeling software for building molecules.

Barometer and altimeter application.

Measure the accuracy of mechanical watches using the phonemicrophone

Predict Sun and Moon position anytime and anywhere in 3D

Periodic Table with chemical equation balancer. Periodic table withall details

Want to review chemical Named Reactions, their mechanism andconcrete examples?

Sun Position shows you sunrise and sunsettimes, as well as the solar and lunar path on an augmented realitycamera view for any day of the year at your current location. Itshandy data screen also gives you other useful information includingmoon rise/set times, golden hour and twilight times, and moon phaseinformation.The app has a map view which plots the daily sun and moon pathrelative to your current location. It also contains a widget foryour home screen showing sunrise/set times for the current day andyour current location.This is the full version of Sun Position. You can also downloada free demo version which is limited to showing data for thecurrent day (click on more apps by Stonekick to find this).- Plan a photography shoot - know in advance exactly when andwhere sunrise and sunset will be- Viewing a potential new home? Use this app to find out whenyou'll get sun in your kitchen.- Planning a new garden? Find out which areas will be the mostsunny, and which areas are likely to be in shade throughout theday- Getting solar panels? Check whether nearby obstructions will be aproblem.For more information on the data included in Sun Position seeour blog post:http://stonekick.com/blog/the-golden-hour-twilight-and-the-position-of-the-sun/

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A TimegrapherThis app is to measure the BPH(Beats per hour) of mechanicalwatches.It will display time error per day as well.The app uses microphone to measure BPH.** Recommend to plug a microphone into phone and attach themicrophone to the back of your watch.** Basic version display wave graph and pulse intervalhistogram.** Frequency display requires 'Premium' upgrade.** Please test the app with your watch before you purchase'Premium' upgrade. The app will work as Premium during 30min.Not for digital clocks.Not working in noisy environment.Set microphone direction toward a clock.- Review from Mr. Kojimahttp://www.thewatchsite.com/index.php/topic,42142.0.html- Preset exampleRolex or mechanical watch: Target frequency: 4 or 5Hz, Sampleduration: 2Sec, Sensitivity: manual 50Most pendulum clock: Target frequency: 1 or 2 Hz, Sample duration:5 or 10 Sec, Sensitivity: mediumFAQ.1) in the settings there is a sensitivity option with a high,medium, low and 3 manual settings, can you explain how this changesthe resultsIt determines sound amplitude threshold for detecting clock sound.If your clock sound is loud you may reduce sensitivity. This willallow more environmental noises.If you increase the sensitive, you may measure hand watches. Butsmall noise may measurement errors.2) why does the detected frequency change between light grey, blackand redRed means smaller drift during the measurement interval while greymeans that measurement may have an error.3) the average frequency does not always calculate, it stays atNaNThe 'detected frequency' should be red continuously.4) how do you calculate the pulse drift %abs(max detected frequency - min detected frequency) / detectedfrequency during 1 detection cycle.5) what are the 2 graphs showing and what data are you using forthe calculationsThe size of bars in the upper graph should be almost thesame.The bottom shows amplitude of sound wave recorded from microphone.6) are newer versions of the app being developed** You may provide sound sample by sending wav or mp3 file [email protected]

Interactive thin sections of minerals under the microscope.

A calculator for finding the true position of holes