Andreas Horvath

The Basel problem is a problem in mathematical analysis with relevance to number theory, first posed

Boyle's law, also referred to as the Boyle–Mariotte law, or Mariotte's law, is an experiment

Select the system sounds you like and use it in your app with the Warning once only: AudioServicesPl

Do some static breathhold training wherever you are: Select the breathhold-time, the recover-time an

Did it happen to you, that you forget to bring freediving gear with you?Have fun packing your diving

Put your iPad, preferably in a water-proof bag, at one end of the pool. Set your interval time and t

Select your preparation time to get ready for the training session. A good value is 2 - 3 minutes to

Find pairs of cards with pictures of cats. Watching pictures of cats is super relaxing, try this gam