Abstract: The present invention provides centrifuges (e.g., analytical centrifuges) comprising a cooling assembly having a cooling surface disposed inside the centrifuge chamber and spaced apart from the rotor. The cooling surface disposed inside the centrifuge chamber, spaced apart from the rotor, and configured to exchange heat between the cooling assembly and the rotor, the thermal element thermally coupled to the cooling surface, and configured to control the temperature of the cooling surface.

Abstract: The present invention provides centrifuges (e.g., analytical centrifuges) comprising a cooling assembly having a cooling surface disposed inside the centrifuge chamber and spaced apart from the rotor. The cooling surface disposed inside the centrifuge chamber, spaced apart from the rotor, and configured to exchange heat between the cooling assembly and the rotor, the thermal element thermally coupled to the cooling surface, and configured to control the temperature of the cooling surface.

Abstract: A physical interaction device includes a controller (110) and one or more arms (102), such as a first arm (102) and a second arm (101). The first arm (102) is movably connected with a first support (104). The first arm includes a first flexible portion sized to physically interact with a first limb portion of a user of the device. The second arm (101) is movably connected with a second support (105). The second arm (101) includes a second flexible portion sized to physically interact with the first limb portion of the user and/or a second limb portion of the user. The controller (110) is linkable with the first arm (102), the second arm (101) and the pitch adjuster (402). The controller (110) is configured to adjust the angle of the first arm (102) and the second arm (101). The controller (110) is configured to selectively cause a first movement of the first flexible portion of the first arm (102).

Abstract: A physical interaction device includes a controller and one or more arms, such as a first arm and a second arm. The first arm is movably connected with a first support. The first arm includes a first flexible portion sized to physically interact with a first limb portion of a user of the device. The second arm is movably connected with a second support. The second arm includes a second flexible portion sized to physically interact with the first limb portion of the user and/or a second limb portion of the user. The controller is linkable with the first arm and the second arm. The controller is configured to selectively cause a first movement of the first flexible portion of the first arm. The controller is configured to selectively cause a second movement of the second flexible portion of the second arm. The first movement of the first flexible portion of the first arm serves to contact the first flexible portion of the first arm with the user to physically imitate a first human strike toward the user.