What is interferometry?

Radio waves can literally bounce off the ocean. In 1948 a group of Australian scientists arrived by ship in Auckland with their interferometer mounted on a trailer. They were looking for a west facing cliff of the right height, with a steady supply of power. Two sites were chosen, in Pakiri and Piha, to make observations that would lead to the birth of radio astronomy as we know it today. A way of knowing about something is to observe the differences between iterations of itself. As any experience unfolds, our developing memories and expectations of that experience interfere with our continuing engagement with the present. Basing their method on Lloyds mirror, in which light is projected directly towards a screen at the same time as its reflection, the scientists recorded radio waves from the Crab Nebula. Focusing on the interference between directly recorded waves and their reflections off the surface of the ocean, cosmological objects can be measured and located. Using the ocean as a vast mirror expands the aperture of the antenna beyond practical limitations. Perception meets reflection at the cliff top, amplified at certain times of day, and conditions of the weather, for we do not hear sounds, but hear in them. Observations made here will directly and indirectly affect the nature of the things being observed. Tangents and reflections written into a text or conversation may interfere with our desire for narrative structure. Could we take our tangent somewhere? Perhaps into a search for the past as it interferes with local reflections.

What is interferometry?

Radio waves can literally bounce off the ocean. In 1948 a group of Australian scientists arrived by ship in Auckland with their interferometer mounted on a trailer. They were looking for a west facing cliff of the right height, with a steady supply of power. Two sites were chosen, in Pakiri and Piha, to make observations that would lead to the birth of radio astronomy as we know it today. A way of knowing about something is to observe the differences between iterations of itself. As any experience unfolds, our developing memories and expectations of that experience interfere with our continuing engagement with the present. Basing their method on Lloyds mirror, in which light is projected directly towards a screen at the same time as its reflection, the scientists recorded radio waves from the Crab Nebula. Focusing on the interference between directly recorded waves and their reflections off the surface of the ocean, cosmological objects can be measured and located. Using the ocean as a vast mirror expands the aperture of the antenna beyond practical limitations. Perception meets reflection at the cliff top, amplified at certain times of day, and conditions of the weather, for we do not hear sounds, but hear in them. Observations made here will directly and indirectly affect the nature of the things being observed. Tangents and reflections written into a text or conversation may interfere with our desire for narrative structure. Could we take our tangent somewhere? Perhaps into a search for the past as it interferes with local reflections.