What happens when a fluid cools down?
Answer: When the fluid cools, the kinetic energy of the molecules decreases. This causes the molecules to slow down and move closer together. Since the molecules are closer together, the density of the fluid increases and the fluid sinks.
What best describes how fluids change as they travel?
Answer Expert Verified. Explanation: Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air. Convection currents form because when a fluid is heated, it expands, becoming less dense.
What kind of radiation does a light bulb emit?
ultraviolet radiation
How much radiation does a light bulb give off?
How Much Radiation Do Lightbulbs Emit?
| Type of Bulb | Direct Contact | 2 Feet Away |
|---|---|---|
| LED Bulb | 258 V/m | 15 V/m |
Do lights give off radiation?
Inside the bulb, electrical discharge excites a gas (usually neon or mercury vapour in argon), which emits ultraviolet radiation. But the ultraviolet radiation is not visible to human eyes and must be converted into visible light. In fact many types of lighting used in our homes emit small amounts of UV radiation.
Do ring lights cause cancer?
The ‘blue light’ emitted by LED light bulbs has been linked to breast and prostate cancer, according to a new study. They are yet to research the effect of ‘blue light’ emitted by smartphone screens.
Are LED lights safer than incandescent?
LEDs consume far less electricity than incandescent bulbs, and decorative LED light strings such as Christmas tree lights are no different. Safer: LEDs are much cooler than incandescent lights, reducing the risk of combustion or burnt fingers.
What would the world look like if we could see ultraviolet?
Ultraviolet. If you could see the ultraviolet part of the spectrum, you would see a number of different objects. This is because our friendly sun gives off quite a bit of light at this frequency, so it would bathe the world in glow, much like it does not.