then, but since 1927 it since 1927 it has been at this museum which was recently renamed, the galileo museum. there are various ways to interpret this object. meet galileo had complicated relationship with the church. you can see it as he is merely a indicating the heavens above or you can view it as a more pointed message, the interpretation is up to you. [laughter] so there is a period of a few decades in between when aircraft started to be used as part of the military weapons and prior to the development of radar for detecting an incoming bombing raid. during this during this time there is some creative approaches into how to know when you are about to be attacked. these three concrete objects are on the south coast of england, they are known as listening ears because what the british did was to build these curves, these semi circles as a means of trying to amplify incoming aircraft noise. they built them, they pointed they pointed them toward germany, and they hoped for the rest. you can see on the right there is a stand where microphone would have been mounted. the idea was to amplify t