Learn how NOT to believe what you see with this book of eye-popping pop-up visual tricks. From the classic "which dot is bigger?" or "is this line straight?" illusions to the first-ever 3D trick to appear in a book, Optical Illusions is packed with picture puzzles. Every illusion is set up to challenge what you think you see.
There are hints and tips of how to approach the illusion, and then an explanation of how it works and why you were fooled (and you will be!). There are also flaps, tabs, and a decoder to test the answers, so you can check whether different-looking colours are actually the same, or if those lines really are wonky. All kinds of visual tricks are featured, including distortion, motion, colour and brightness, ambiguous illusions, impossible objects, hidden images...
but the stars of the show are two large interactive illusions - the "thaumatrope" spinner that puts a bird in a cage, and a 3D perspective sculpture. Even though you will build it yourself and know which bits pop out and which parts are flat, you can't help but see them the other way around. Optical Illusions will get you lifting flaps and turning tabs in your quest to see the truth behind the illusion - and the more you discover, the more impressive the illusion becomes.
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Refund Policy
Refund Policy
if you are a UK/EU consumer, you have the legal right, under the Consumer Protection (Distance Selling) Regulations 2000 to cancel your order within twenty eight (28) working days following your receipt of the goods or the date on which we begin provision of the services. Refunds for orders cancelled under the provisions of the Consumer Protection (Distance Selling) Regulations will be processed in accordance with your legal rights. For further information about your statutory rights, contact your local authority Trading Standards department or consumer advice center (for example the Citizen's Advice Bureau if you are in the UK). If you are a non-EU customer, please see our returns policy. If you are considering cancelling or wish to cancel a product you have ordered from us, please be aware of the following terms that apply:
Applicability of cancellation rights: Legal rights of cancellation under the Distance Selling Regulations available for UK or EU consumers do not apply to certain products and services.
The sale of customised goods or perishable goods, sealed audio or video recordings, or software, which has been opened.
Goods that by reason of their nature, cannot be returned - (Items such as underwear, where the 'hygiene patch' has been removed, or cosmetics where the seal has been broken).
Additional cancellation terms: Where Additional Terms and Conditions of Sale are applicable to any product or service you have ordered from us, these may also govern your cancellation rights and you should review these carefully;
Damaged or incorrectly supplied products: You should check all products you receive against your order. If the products you receive are damaged or incorrectly supplied on delivery then you must note the details of any damage or error in supply on the delivery documentation or if you are unable to view the items on receipt, you must inform us (by post, phone or e-mail only) within the seven day period. You must return the products to us as soon as possible after informing us that the products are damaged or have been incorrectly supplied.
Other cancelled products: If you want to cancel products that are not damaged or incorrectly supplied, then you must inform us of this within seven working days following the date of receipt in accordance with the Distance Selling Regulations or otherwise as soon as possible. You must take reasonable care of the products that you wish to cancel and not use them. Products should be returned in their original packaging or promptly at your cost.
This is not intended to be a full statement of all your rights under the Distance Selling Regulations. Full details of your rights under the Distance Selling Regulations are available in the UK from your local Citizens' Advice Bureau or your Local Authority's Trading Standards Office.
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