Irish stepdance many this was a betrayal of tradition, but to some it was a way of expanding Irish culture and became widely accepted. Following after Riverdance was Lord of the Dance and many other theatrical productions based on Irish stepdance. Michael Flatley, an Irish stepdancer, became a well known name within these shows. Two types of shoes are worn in Irish stepdance; hard shoes, which make sounds similar to tap shoes, and soft shoes (called Ghillies), which are similar to ballet slippers. The dances for soft shoe and hard shoe are generally different and go by different names. Different music with
Solar activity and climate the measurements started in 1978. Solar irradiance before the 1970s is estimated using proxy variables, such as tree rings, the number of sunspots, and the abundances of cosmogenic isotopes such as Be, all of which are calibrated to the post-1978 direct measurements. Solar activity has been on a declining trend since the 1960s, as indicated by solar cycles 19-24, in which the maximum number of sunspots were 201, 111, 165, 159, 121 and 82, respectively. In the three decades following 1978, the combination of solar and volcanic activity is estimated to have had a slight cooling influence. A 2010 study