During a sunny afternoon, the sun suddenly seems much less bright than usual. The daylight seems much less intense, as if there is a dense cloud cover, but there are no clouds in the sky. After about a half hour, everything seems normal again. Which claim about the temporary decrease in light can be supported by the evidence?
O The moon was passing between the sun and Earth
O An airplane was flying overhead and blocked the light from the sun
O There are variations in the amount of light produced by the sun
O A sudden change in temperature increased the density of the atmosphere

anchor = archer //

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

magnets not strong enough

explanation: