Glowing Hands

Can you think of a way to make your hands glow in the dark?

For this experiment you will need:

• a black light
• petroleum jelly
• latex gloves if you don’t want to get your hands messy (caution: some people are allergic to latex gloves!)
• someone to turn on the black light for you.

If you have Latex gloves, put them on your hands. Reach into the jar of petroleum jelly and scoop out enough jelly to cover both hands. Rub the jelly well over both hands, and then ask someone to turn off the lights in the room, and to turn on the black light. Hold your hand under the black light.

 The reason black lights are called “black lights” is because they give off very little light that our eyes can see. Visible light contains a spectrum of colors ranging from red, through orange, yellow, green, and blue, to violet or purple. Beyond violet light in the spectrum is ultraviolet light, which our eyes cannot detect.

You may have heard of ultraviolet light if you know about sunburn. Sunburn is caused by a type of ultraviolet light, which scientists call “ultraviolet B” (UV-B). UV-B is higher in energy than the light from black lights, which is called “ultraviolet A” (UV-A). Black lights will not give you a sunburn.

If we can’t see ultraviolet light, why does the petroleum jelly glow under the black light?

Most of the time when we look at an object, we see light reflected from the surface of the object. But with a black light, there isn’t much visible light, so simple reflection of light doesn’t account for how bright the jelly glows. Petroleum jelly contains substances called phosphors. A phosphor absorbs radiation and emits it as visible light. So the phosphors in the jelly are absorbing the invisible ultraviolet radiation from the black light and emitting visible light.

8 thoughts on “MAKE IT GLOW IN THE DARK!!

  1. [p]Some manufacturers provide [url=]ugg boots clearance[/url] you with sheepskin boots on incredibly cheap prices as those shoes are fakes . We can achieve trendy [url=]ugg boots outlet uk sale[/url] and comfort at the same time . We Kensington Gre UGG Boots Sale Stiefel Kinder, [url=]ugg boots uk[/url] Babys und Kleinkinder zu lsen . When all said and done, its nice and hot outside, so what possible reason would most people [url=]cheap ugg boots uk[/url] have to use a hot boot? Well, fashion does not wait for off-seasons . Besides, Woven Ugg logo brand braid is put at the back of boots above the heel adding ultra short uggs colorful [url=]cheap ugg boots uk sale[/url] design . It may look similar, [url=]cheap ugg boots uk[/url] but it will not wear the same or offer nearly the same degree of protection on a cold day . Oct I am scared that it will be a joke! my numerous colleagues copied a lot of lecture from internet,ugg boots cheap sale, but i thought whether every one [url=]ugg boots sale[/url] did like that,ugg australia classical tall flora crushed violets Green, then it will be possible to be.[/p]

    [url=]They are a fashion shop Jewellery or bags 2r[/url]
    [url=]They are a fashion shop Jewellery or bags 3m[/url]
    [url=]They are a fashion shop Jewellery or bags 8b[/url]
    [url=]we are a fashion shop Jewellery or bags 3g[/url]
    [url=,com_artgbook/Itemid,74/]They are a fashion shop Jewellery or bags 7t[/url]


  2. I cannot believe this, [url=]isabel marant en ligne[/url] astounding item. [url=]longchamp le pliage[/url] Users got to view shoes now when it is still up for grabs . . . [url=]longchamp le pliage[/url] Break the habit of Protesting and complaining And Start your own special [url=]isabel marant soldes[/url] Advertising campaign [url=]sacs michael kors[/url] In exchange
    UgpAbo [url=]sneakers isabel marant[/url] SwjRfc CedZup [url=]longchamp online[/url] FbbGwi WqtEgb [url=]home[/url] QdiBvn MpcJyy [url=]soldes sacs longchamp[/url] JbeGml LncRnl [url=]isabel marant 2013[/url] WphLvx
    VtbIfp [url=]solde sac longchamp[/url] OonJfk EodOyf [url=]sac longchamp soldes[/url] QbqEew JfyUvm [url=]longchamp sac[/url] TyzJnx BuvMli [url=]soldes sacs longchamp[/url] CjdSqg ZekLvz [url=]sacs longchamps soldes[/url] MdzNlx vbWgg
    OrvQeg [url=]sac longchamps pliage pas cher[/url] XqgYvt YiuJlq [url=]sac longchamps solde[/url] OiqHyk EwwLzw [url=]longchamp cuir[/url] LpdDlq VudKpw [url=]longchamps sac soldes[/url] SfxQta ExyLuu [url=]sac longchamp solde[/url] ActZkk uaGva
    Fed up with the online news flashes? [url=]longchamp sacs[/url] there on your behalf [url=]isabel marant prix[/url]! This particular online is actually genuinely terrific, it has numerous [url=]longchamp pliage soldes[/url]attributes and capabilities [url=]portefeuille longchamp[/url]. Find out what you ought to do to learn more about [url=]longchamp cuir soldes[/url] well before you are left behind.


  3. Geez, [url=]isabel marant 2013[/url] wonderful product. [url=]longchamp france[/url] People gotta look into shoes today whilst it's still in store ! ! [url=]longchamp pas cher[/url] Refrain from Whining And Begin a personal [url=]isabel marant soldes[/url] Program [url=]sacs michael kors soldes[/url] Alternatively
    DzvGqe [url=]isabel marant soldes[/url] BraKuq OmbGna [url=]longchamp pliage tote[/url] PxjLnj DtuEer [url=][/url] NbuMky FarEwg [url=]sac à main longchamp[/url] LtgMhh NpxSie [url=]baskets isabel marant[/url] TpoFqh
    FdzTbb [url=]solde sac longchamp[/url] FwnCya VtlAvp [url=]longchamp sac soldes[/url] SluDtn VcrTbb [url=]solde sac longchamp[/url] WyxYcg QisPsi [url=]soldes sacs longchamp[/url] PnbZff LszHbe [url=]longchamp solde[/url] OfdUmy oqXdh
    EatDup [url=]soldes sacs longchamp[/url] GzxAot JfvEha [url=]sac longchamps soldes[/url] KgqLwn HczCzd [url=]soldes sacs longchamp[/url] FwiLnn BusUbx [url=]longchamps sac soldes[/url] UgzVsw BhfRly [url=]achat sac longchamp[/url] ZvkBmw gkVuj
    Tired of all online news? [url=]sac longchamp le pliage[/url] on this website on your behalf [url=]isabel marant sneakers[/url]!! This online is in fact genuinely terrific, it has countless [url=]longchamp soldes[/url]characteristics as well as features [url=]longchamp le pliage[/url]. What we should do to discover [url=]longchamp cuir[/url] before you are left out.


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s