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The Haunted Science Lab

Halloween is the darkest time of year, so bring the light

When the nights grow long and the shadows creep in, it's the perfect time to discover what light can really do. Bend it through lenses to shrink, flip, and magnify the world. Trap it between mirrors to conjure endless, eerie reflections. Build a flashlight to push back the darkness, then craft a projector to cast your own images onto the walls like ghostly apparitions.

This Halloween bundle brings together four MEL Science kits that all explore the science of light: Lenses, Reflections, Flashlight, and Projector. Each one is hands-on, a little bit spooky, and guaranteed to light up curious minds (and a few dark corners too).

4 MEL Science kits for $149.90. Fast delivery within 2–5 days across the US.

Science After Dark

Where does the light go? Build an infinite mirror and watch a single glow multiply into a ghostly corridor that vanishes into the shadows.

The Midnight Laboratory

Is it alive? A drop of liquid becomes a lens, casting pulsing crimson shapes that twist and ripple like something from beneath the surface.

Masters of Light and Shadow

Now you see them, now you don't. Switch the light and a hidden face appears behind the glass, just like the secret rooms where someone is always watching.

and many more experiments...

Here's a few DIY ideas while
you wait for your bundle

Foam Jack-O’-Lantern

What you will need

To make foam­ing pump­kin, you’ll need: - hy­dro­gen per­ox­ide, H₂O₂ (any strength will do, but the less con­cen­trat­ed it is, the less dense your foam will be) (1/4 cup or 60 mL) - wa­ter (1/8 cup or 30 mL) - yeast (1/2 oz or 14 g) - any food col­or­ing (1 tsp or 5 mL) - liq­uid dish soap (1 Tbsp or 15 mL) - 3 cups or small bowls - jack-o’-lantern (you won’t need can­dles, but keep the top – it will serve as a lid)

Instructions

1. In the first cup, mix the hy­dro­gen per­ox­ide, liq­uid soap, and food col­or­ing 2. In the sec­ond cup, mix the yeast with some wa­ter 3. Put the emp­ty third cup into the pump­kin and pour in the con­tents of the oth­er two cups: first the soap so­lu­tion, then the yeast mix­ture 4. Quick­ly put the lid on the pump­kin: this re­ac­tion will pro­duce a lot of foam. When hy­dro­gen per­ox­ide de­com­pos­es, it pro­duces oxy­gen and wa­ter. Nor­mal­ly this is a rel­a­tive­ly slow process, but yeast speeds it up dra­mat­i­cal­ly. The rapid­ly-gen­er­at­ed oxy­gen whips the liq­uid soap into a thick, vo­lu­mi­nous foam. There’s so much foam that it forces its way out of the jack-o’-lantern!

Smok­ing Jack-O’-Lantern

What you will need

Want to add some va­ri­ety to Hal­loween’s most renowned sym­bol – the Jack-o'-lantern? Just use plain old glyc­erin! To make “smol­der­ing” pump­kin, you’ll need: - glyc­erin, C₃H₅(OH)₃ (1 tsp or 5 mL) - 3 small can­dles - 1 alu­minum can - scis­sors - pipette (to trans­fer glyc­erin) - jack-o’-lantern (be sure to save the top—it will serve as a lid!)

Instructions

1. Set a few can­dles in the pump­kin and light them; 2. Cut an alu­minum can to make a stand as shown in the video; 3. Drip some glyc­erin into the hol­low of the can; 4. Place the lid (saved from when you carved your pump­kin) on your jack-o’-lantern. Why does the glyc­erin va­por ap­pear? The can­dles warm the alu­minum, and the glyc­erin be­gins to va­por­ize in the heat, turn­ing into white, smoky clouds. This makes for a tru­ly ter­ri­fy­ing pump­kin – it’s both glow­ing from the can­dles and re­leas­ing omi­nous smoke from its eyes and mouth! Ob­serve fire safe­ty pre­cau­tions when con­duct­ing this ex­per­i­ment!

Get your spooky science bundle while it's in stock!

The Haunted Science Lab

Halloween is the darkest time of year, so bring the light When the nights grow long and the shadows creep in, it's the perfect time to discover what light can really do. Bend it through lenses to shrink, flip, and magnify the world. Trap it between mirrors to conjure endless, eerie reflections. Build a flashlight to push back the darkness, then craft a projector to cast your own images onto the walls like ghostly apparitions. This Halloween bundle brings together four MEL Science kits that all explore the science of light: Lenses, Reflections, Flashlight, and Projector. Each one is hands-on, a little bit spooky, and guaranteed to light up curious minds (and a few dark corners too). 4 MEL Science kits for $149.90. Fast delivery within 2–5 days across the US.

Science After Dark

Where does the light go? Build an infinite mirror and watch a single glow multiply into a ghostly corridor that vanishes into the shadows.

The Midnight Laboratory

Is it alive? A drop of liquid becomes a lens, casting pulsing crimson shapes that twist and ripple like something from beneath the surface.

Masters of Light and Shadow

Now you see them, now you don't. Switch the light and a hidden face appears behind the glass, just like the secret rooms where someone is always watching.

and many more experiments...

Here's a few DIY ideas while
you wait for your bundle

Foam Jack-O’-Lantern

What you will need

To make foam­ing pump­kin, you’ll need:
- hy­dro­gen per­ox­ide, H₂O₂ (any strength will do, but the less con­cen­trat­ed it is, the less dense your foam will be) (1/4 cup or 60 mL)
- wa­ter (1/8 cup or 30 mL)
- yeast (1/2 oz or 14 g)
- any food col­or­ing (1 tsp or 5 mL)
- liq­uid dish soap (1 Tbsp or 15 mL)
- 3 cups or small bowls
- jack-o’-lantern (you won’t need can­dles, but keep the top – it will serve as a lid)

Instructions

1. In the first cup, mix the hy­dro­gen per­ox­ide, liq­uid soap, and food col­or­ing 2. In the sec­ond cup, mix the yeast with some wa­ter 3. Put the emp­ty third cup into the pump­kin and pour in the con­tents of the oth­er two cups: first the soap so­lu­tion, then the yeast mix­ture 4. Quick­ly put the lid on the pump­kin: this re­ac­tion will pro­duce a lot of foam. When hy­dro­gen per­ox­ide de­com­pos­es, it pro­duces oxy­gen and wa­ter. Nor­mal­ly this is a rel­a­tive­ly slow process, but yeast speeds it up dra­mat­i­cal­ly. The rapid­ly-gen­er­at­ed oxy­gen whips the liq­uid soap into a thick, vo­lu­mi­nous foam. There’s so much foam that it forces its way out of the jack-o’-lantern!

Smok­ing Jack-O’-Lantern

What you will need

Want to add some va­ri­ety to Hal­loween’s most renowned sym­bol – the Jack-o'-lantern? Just use plain old glyc­erin! To make “smol­der­ing” pump­kin, you’ll need: - glyc­erin, C₃H₅(OH)₃ (1 tsp or 5 mL) - 3 small can­dles - 1 alu­minum can - scis­sors - pipette (to trans­fer glyc­erin) - jack-o’-lantern (be sure to save the top—it will serve as a lid!)

Instructions

1. Set a few can­dles in the pump­kin and light them; 2. Cut an alu­minum can to make a stand as shown in the video; 3. Drip some glyc­erin into the hol­low of the can; 4. Place the lid (saved from when you carved your pump­kin) on your jack-o’-lantern. Why does the glyc­erin va­por ap­pear? The can­dles warm the alu­minum, and the glyc­erin be­gins to va­por­ize in the heat, turn­ing into white, smoky clouds. This makes for a tru­ly ter­ri­fy­ing pump­kin – it’s both glow­ing from the can­dles and re­leas­ing omi­nous smoke from its eyes and mouth! Ob­serve fire safe­ty pre­cau­tions when con­duct­ing this ex­per­i­ment!

Get your spooky science bundle while it's in stock!