Recent content by Rossen

Yes OOO, the Schumann resonance has been considered as possible cause. But this hypothesis has too many shortcomings. 1. Schumann resonance as phenomenon isn't since yesterday. It exists milions years. It isn't clearly why in the past it hasn't produced a hum, but now it does. 2. In Internet...

Far Star, "Kazana" on Bulgarian means "the cauldron" on English. This place is in the interior of Vitosha. It is closed from three sides with steep slopes. At the upper side where Sofia is visible the hum is present. Around 30 m further down, where Sofia isn't visible, the hum disappears. If...

OOO, Yes, you have understood corectly. Nobody (included me) has measured the hum. But about the frequency - it isn't problem to determine it. If you are a hearer you can determine your frequency by comparison of your hum-feeling with tones produced from tone generator. The most used method is...

Far Star, The answer of your question isn't easy. In mountains usually there is a wind, especially at big altitude. The wind produces serious infrasound background. The infrasounds interact with hum-feeling and sometimes are able to stop it fully. But yet I have some observations. They are from...

New member Hello colleagues, My name is Rossen Kolarov. I am a physicist from Bulgaria. For this forum informed me one hum-hearer from USA. I am a hum-hearer since 1999. In my family there are four other hearers, too. I read the messages in your forum. In my opinion some of members aren't well...