Light Waves

Fascinating physics facts a young scientist needs to know, from one of the most trusted teams in STEM for children!

This kid-friendly introduction to the physics of light covers the basics of solar energy, the electromagnetic spectrum, photon particles, light scattering, and reflection and refraction. Readers will follow along as two children and a cow in a lab coat learn how light works in realistic and imaginative scenarios.

With accessible language, grounded examples, and easy, hands-on experiments you can do with household items, David A. Adler explains the basics of how light travels and bends.  Anna Raff's bright, humorous illustrations make an intimidating topic easy-- and fun!-- to understand. This colorful picture book is a perfect supplement to lessons on light waves, and a great way to explore the topic at home.
 
Named a finalist for the AAAS/Subaru SB&F Prize for Excellence in Science Books in the Children's category, Light Waves is a must-have book for all self-professed science nerds!

Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs