Please ensure that orders for stocked products are placed by 12pm on Monday 23rd December for delivery on 24th December. Deliveries will restart from 3rd January 2025.
Explain why the sky is blue during the day but yellow at sunset! Amaze your students with this glass egg that acts like a little piece of the sky. The egg looks blue when light passes through a small part of it. But when light passes through a large amount, it appears yellow. Just like the sky! At sunset, the sun's light is passing horizontally through a thick layer of atmosphere and appears yellow. But during the day, the sun's light passes nearly vertically through much less atmosphere, and so it appears blue. The reason is that short wave blue light is more frequently scattered by air molecules than longer wave red and yellow light. So during sunset the blue light is already scattered away before the light finally reaches your eye. The Sunset Egg demonstrates these same phenomena using microscopic glass dye particles (cobalt oxide) to substitute for air molecules. - Read more
Limited stock available for delivery in 2 working days
Explain why the sky is blue during the day but yellow at sunset! Amaze your students with this glass egg that acts like a little piece of the sky. The egg looks blue when light passes through a small part of it. But when light passes through a large amount, it appears yellow. Just like the sky! At sunset, the sun's light is passing horizontally through a thick layer of atmosphere and appears yellow. But during the day, the sun's light passes nearly vertically through much less atmosphere, and so it appears blue. The reason is that short wave blue light is more frequently scattered by air molecules than longer wave red and yellow light. So during sunset the blue light is already scattered away before the light finally reaches your eye. The Sunset Egg demonstrates these same phenomena using microscopic glass dye particles (cobalt oxide) to substitute for air molecules.
Delivery will be between 8-5pm, depending on supplier. If a more specific delivery is required, additional delivery charges may apply.
All non-stocked items are sent directly from our suppliers and will normally be delivered within 1-3 weeks, depending upon the supplier.
Delivery for orders of £20 and over (excl VAT) will be free unless stated.
A small charge of £3.50 (inc VAT) will be applied to orders under £20.
Direct Delivery
Delivery will be between 8-5pm, depending on supplier. If a more specific delivery is required, additional delivery charges may apply.
All non-stocked items are sent directly from our suppliers and will normally be delivered within 1-3 weeks, depending upon the supplier.
Next Day Delivery (Under £20 ex VAT)
£3.50 (inc VAT)
Next Day Delivery (Over £20 ex VAT)
FREE
Next Day Delivery
Placed before 12pm* Monday-Friday for stocked items that are in stock.
Next Day Delivery (Under £20 ex VAT)
£3.50 (inc VAT)
Next Day Delivery (Over £20 ex VAT)
FREE
Scheduled Delivery
Please specify this at the time of placing your order (available at the Checkout if ordering online).
Special Requirements
If you have special requirements/restrictions for delivery, we'll be happy to accommodate wherever possible. Let us know when placing your order, or call our Customer Experience team with your order number on 0808 281 8440
Free next day delivery for all orders of £20 and over (excl VAT) placed before 12pm for stocked items that are in stock. Excludes Highlands and Islands.
A small charge of £3.50 (inc VAT) will be applied to orders under £20. This is a recent change we have made to our delivery policy to help reduce the number of small, individual deliveries we make each day, lessening our impact on the environment and supporting our efforts to be more sustainable and eco-aware.
Next Day Delivery
Placed before 12pm* Monday-Friday for stocked items that are in stock.
*Credit account customers who receive deliveries within the catchment area of the KCS delivery fleet receive a later next day cutoff time of 2pm. Please check with your Account Manager or contact Customer Experiences to check if this applies to you.
Next Day Delivery (Under £20 ex VAT)
£3.50 (inc VAT)
Next Day Delivery (Over £20 ex VAT)
FREE
Direct Delivery
Delivery will be between 8-5pm, depending on supplier. If a more specific delivery is required, additional delivery charges may apply.
All non-stocked items are sent directly from our suppliers and will normally be delivered within 1-3 weeks, depending upon the supplier.
Next Day Delivery (Under £20 ex VAT)
£3.50 (inc VAT)
Next Day Delivery (Over £20 ex VAT)
FREE
Scheduled Delivery
Please specify this at the time of placing your order (available at the Checkout if ordering online).
Special Requirements
If you have special requirements/restrictions for delivery, we'll be happy to accommodate wherever possible. Let us know when placing your order, or call our Customer Experience team with your order number on 0808 281 8440
