Opposing concepts in cell theory: history and background. The cell was first discovered by Robert Hooke<span> in 1665 using a microscope. The first cell theory is credited to the work of </span>Theodor Schwann<span> and </span>Matthias Jakob Schleiden<span> in the 1830s.</span>
You can use a refractometer to measure sugar content in upripe and ripe bananas and evaluate how important the formation of sugars is in the ripening process. If other unripe fruits are available, expand this study to include these other fruits
A special type of motor that is designed to operate even when the rotor is stalled is called a torque motor and it does not incur any damage while doing so.
These motors have a toroidal construction and are induction motors.
They have a wide diameter which allows them to have a higher torque and thus, this improves their thermal performance and this enables the motor to keep working even when it is stalled as it can draw high currents.
Further, these motors are usually present without brushes or commutators due to which they can operate at higher speeds.
A torque motor is most commonly found in tape recorders, computer games, throttle controls and actuators.