A spectrophotometer measures the transmittance, the absorbance, or both, of a particular wavelength of light after it has passed through a liquid sample. Before the transmittance or absorbance of the sample is measured, a cuvette filled only with solvent, called the blank, is placed in the spectrophotometer. Select the step that is not necessary to complete before a cuvette is placed into the spectrophotometer. Select one: a. Make sure the cuvette has exactly the same amount of solution so the readings are consistent. b. Make sure the cuvette is oriented in the spectrophotometer in the same way each time it is used. c. Wipe off the outside of the cuvette with a cleaning tissue to remove any debris or fingerprints. d. Rinse the cuvette with the sample solution, after washing, to remove residual solvent.

D

Explanation:

Rinse the cuvette with the sample solution, after washing, to remove residual solvent.

you go to your settings preference and in the end youll see sth that says "i want to delete my acc" click on it and u'll acc will be deleted but u have to wait.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia