For anyone wondering what's normally attached to a weather balloon, reading up on the history of the Radiosonde[1] is pretty interesting. Things like thermal i

For anyone wondering what's normally attached to a weather balloon, reading up on the history of the Radiosonde[1] is pretty interesting. Things like thermal insulation, choice of materials for biocompatibility/minimal long-term hazard etc are all important parts of the design. There's a fairly in-depth tear-down and explanation of the bits of one by Mike Harrison online[2]. The battery tech used there is particularly neat IMO. [1] http://radiosondemuseum.org/the-collection/ http://radiosondemuseum.org/the-collection/ [2] http://youtu.be/xSxtwuTS5hw http://youtu.be/xSxtwuTS5hw