Invisible Pen

Write secret messages that can only be read using the UV micro light provided. The invisible ink from the pen only fluoresces under ultraviolet light...
In stock
SKU
MAS-00178
$3.95

Write secret messages that can only be read using the UV micro light provided. The invisible ink from the pen only fluoresces under ultraviolet light, so it is easy to keep your messages top secret. Or use it as a tool to teach about ultraviolet light and fluorescence. Your students will be keen to know why messages only show-up when the UV micro light is shone on the invisible ink. Lots of light and colour science here.

Ages: 6+

What you get

Invisible pen, UV micro light

How does it work?

Different light has different wavelengths. Ultraviolet wavelengths are short with a very high frequency. When this UV micro light, or black light, is shone on the invisible ink from the pen, the fluorescent ink lights up with a beautiful greenish-blue luminescence. Sun light and light from incandescent bulbs do not excite the fluorescent ink and it remains invisible.

Teach

  • Ultraviolet light demonstrations.
  • Different wavelengths of different light.
  • Wavelength frequency.
  • Fluorescence.
  • Valence electrons.

FAQ

Invisible ink can removed from surfaces using soap and water.

More Information
Length (cm) 14
Width (cm) 7
Height (cm) 2
Age Group 5-6 Years, 7-8 Years, 9-10 Years
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What are the shipping costs?

FREE Shipping is available on all orders over $120 to anywhere in Australia!

Orders under the value of $120 incur a low flat rate shipping cost of only $9.95 to anywhere in Australia.

Express, Registered and International delivery options are also available. The cost for these premium shipping services will be automatically calculated during the checkout process.  Please conact us if you have any queries with these services.

In some cases we may need to apply a shipping surcharge to large or fragile items, especially to remote or non-urban locations. You will be contacted by us for confirmation if this additional charge is applicable.

How long will it take for my order to arrive?.

You should receive your order within 2 to 4 working days, although to some regional and out back areas it can take up to 2 working days longer. Orders going to WA also take a little longer, up to 6 working days.

All standard orders are shipped using Australia Post's eParcel service, so you'll be kept fully informed of the progress of your order during its journey to you. Aside from receiving regular email updates, you can enter your tracking number into Australia Post's website at any time for information about the delivery status of your order.

International delivery will take from between 1 to 4 weeks depending on the destination and potential customs clearance delays.

When will my order be shipped?

We ship every Victorian business day. Orders received and paid for by 12pm AEST time will generally be shipped the same day.

If you require your order urgently, we have a next day delivery express service available.

What locations do you ship to?

We ship to both Australian and International customers.

What shipping options are available?

The majority of orders are shipped using Australia Post's trackable eParcel service, with larger orders being sent by national courier.

We also have options for express or registered post. A number of international delivery options are also available. These can be selected during checkout.