The upper disk and the lower disk have exactly the same objective color, and are in identical gray surroundings; based on context differences, humans perceive the squares as having different reflectances, and may interpret the colors as different color categories; see checker shadow illusion. Some generalizations of the physics can be drawn, neglecting perceptual effects for now:Light arriving at an opaque surface is either reflected “specularly” , scattered , or absorbed—or some combination of these.Opaque objects that do not reflect specularly have their color determined by which wavelengths of light they scatter strongly. If objects scatter all wavelengths with roughly equal strength, they appear white. If they absorb all wavelengths, they appear black.Opaque objects that specularly reflect light of different wavelengths with different efficiencies look like mirrors tinted with colors determined by those differences. An object that reflects some fraction of impinging light and absorbs the rest may look black but also be faintly reflective; examples are black objects coated with layers of enamel or lacquer.
1. Before you place your order T-Rex Dinosaur Thank you for all the roargasms mug
1.1 How much does shipping cost?
Shipping costs will vary depending on the shipping destination and the number of items that you purchase
1.2 How long will it take to ship my order?
Worldwide shipping. Orders typically ship within 5-20 business days. Shipping times vary based on the product and destination.
1.3 I’m having issues placing an order.
2. Payment of T-Rex Dinosaur Thank you for all the roargasms mug
2.1 We currently accept the following forms of payment:
Credit Cards: We accept Visa, American Express, Mastercard, and Discover
Debit Cards: We accept debit cards featuring the Mastercard or Visa logo. If you’re paying with a pre-paid debit card, you must register them before using them for online purchases. You can do this by following instructions on the card or contacting their own support teams.
PayPal: PayPal allows members to have a personal account linked to any bank account or credit card for easy payment at checkout.
Sofort: Sofort allows European customers to use their online banking details as a payment method. It is available in the following European countries: Austria, Belgium, Czech Republic, France, Germany, Hungary, Italy, Netherlands, Poland, Slovakia, Spain, Switzerland and UK. This payment method is only available to customers shipping to the eurozone.
GiroPay: GiroPay enables online customers in Germany to pay via direct bank transfer. This payment method is only available to customers shipping to the eurozone.
SEPA: SEPA enables one-click payment via direct debit for consumers in the eurozone. This payment method is only available to customers shipping to the eurozone.