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How is a flashlight both luminous and nonluminous at the same time?

It's my science homework and I'm not sure how a flashlight can be both luminous and nonluminous.

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How can a flashlight be luminous and non luminous at the same ...


How can a flashlight be luminous and non luminous at the same time? ... Knowledge is a thing you can both share and keep. ... How can a flashlight be non-luminous?
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Can a flashlight be luminous and nonluminous - Answers.com


Can a flashlight be luminous and nonluminous - Answers.com ... Yes.
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Luminosity of animals | Article about Luminosity of animals ...


Find out information about Luminosity of animals ... there are both luminous and nonluminous ... cell and in the same cell over the course of time.
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Marine Phosphorescence | Article about Marine Phosphorescence ...


Find out information about Marine Phosphorescence ... there are both luminous and nonluminous ... cell and in the same cell over the course of time.
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You put a piece of red cellophane over one flashlight and a piece of green ... You now put both the red and green cellophane pieces ... What time is required for one ...
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Bioluminescence in the Sea | Annual Review of Marine Science


... bioluminescence is clearly a predominant form of communication in the sea, ... of luminous taxa since that time ... in both luminous and nonluminous ...
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Suggested Questions And Answer :


How is a flashlight both luminous and nonluminous at the same time?


At first light it DOES sound a bit confusing. First, the definition of the term 'NON-LUMINOUS'; 'Not capable of PRODUCING light but can be capable of REFLECTING light from another source'. For instance, our MOON is NON-LUMINOUS as it REFLECTS light from the Sun. The SUN is LUMINOUS as it produces light that is REFLECTED off the surface of the moon. And so, LUMINOUS means capable of PRODUCING light. Now closely examine your flashlight. The BATTERIES produce electrical energy which is transferred to the BULB which emits light, thus LUMINOUS. The tiny little BULB emits quite a lot of light for its small size. However, the bulb is contained within a concave silvered cone which REFLECTS,(NON-LUMINOUS) gathers and channels the emitted light from the BULB (LUMINOUS) into a BEAM which ILLUMINATES whatever you are pointing the flashlight at. Our cameras would be just paperweights if there were no NON-LUMINOUS surfaces for the light to REFLECT off of, back into the camera lens, onto the 'plate' thus etching the image. For example, take a photograph in the dark without the flash and what do you get. No LUMINOUS, no NON-LUMINOUS. And so there we have LUMINOUS and NON-LUMINOUS, ILLUMINATING our lives. Enjoy! :)
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Vector power on board high intensity spotlight


Had the exact same problem. Checked the battery and discovered the red lead was off the battery. That's all it was. Works fine now.
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I am looking for the AC adapter?


Hi, how long do you leave it pluged in to charge and what lets you know when it is fully charged? I have the 26 led Power On Board Bright Bar.
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