Stop-Motion Animation to Model the Analemma

The Sun does not return to the same position in the sky every 24 hours. At local noon, for example, the Sun will appear higher in the sky as we move from winter to summer solstice. In addition, and perhaps more surprisingly, solar days (the roughly 24 hours between subsequent local noons) vary in length, causing the Sun to be east or west of its location 24 hours prior. Over a year, this variation traces out a figure 8, known as an analemma, as shown in Fig.1. It can also be seen in the sundial in Fig. 2, where the gnomon incorporates the analemma to produce an accurate reading of local time

Water Adaptive Limber Locomotive Effector (WALL-E)

There are many celestial bodies in the Solar System that have the potential for harboring life such as the moons Europa and Enceladus; these worlds hide away vast oceans under thick layers of ice. The potential for these bodies to contain other lifeforms has piqued the interest of organizations on Earth, such as the National Aeronautics and Space Administration (NASA), as destinations for future missions. Because of the distances and relatively harsh conditions involved, Remotely Operated Vehicles (ROVs) would be sent on the initial missions to explore these worlds. The NASA Jet Propulsion Laboratory (JPL) has developed a remotely-operated Mini-Arm for use on an ROV. This mini arm would be used to explore the oceans of these distant worlds. However, it is in need of an end effector capable of manipulating objects of interest; this was the task of the Boise State University Microgravity Team. During the course of the 2018-2019 school year, the team designed and fabricated WALL-E as a flexible and dexterous solution to subsurface gripping. The design, degrees of freedom, and simple user interface allow the operator to easily manipulate samples of varying dimensions and geometries, akin to those potentially found on the aforementioned ocean worlds