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Rankings use category fit, feature coverage, pricing signals, public reception, and recency. Affiliate relationships do not affect scores.

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Best 1 Planck's law

Planck’s law is a fundamental equation in quantum physics that explains how objects emit thermal radiation. It relates the intensity of electromagnetic radiation at each frequency to the object's temperature and wavelength. Developed by Max Planck, this law established the concept of energy quantiza...

2 Blackbody radiation

Blackbody radiation represents the light emitted by any object based purely on its temperature. This phenomenon, explained by Planck’s quantum theory, produces a characteristic spectrum of electromagnetic radiation. It's fundamentally useful for understanding thermal processes and determining temper...

3 Captain Scarlet Captain Scarlet

Captain Scarlet is a marionette character originating from the British television series *Captain Scarlet and the Mysterons*. Created by Anthony Adams and Ray Morris, it represents Spectrum’s elite agent, Paul Metcalfe. Notable for its innovative “supermarionation” technique – bringing articulated p...

4 Sinclair ZX Spectrum 128

The Sinclair ZX Spectrum 128 is a British 8-bit home computer released in 1985. It offered increased memory at 128KB compared to its predecessors, allowing for more complex games and applications. The improved keyboard and built-in BASIC programming language made it accessible for both novice progra...

5 Captain Scarlet Colonel White

Captain Scarlet’s Colonel White is a meticulously crafted marionette representing Spectrum's British military leadership. Created for the 1960s television series Captain Scarlet and the Mysterons, he embodies the show’s innovative “supermarionation” technique. Donald Gray’s distinctive voice brings...

6 Captain Scarlet Captain Blue

The Captain Scarlet and Captain Blue marionette represents a unique achievement in British television design. Created for the 1960s series, it utilizes “supermarionation,” a puppetry technique blending articulated figures with miniature sets. This intricately crafted puppet, voiced by Ed Bishop, pla...

7 Wien's displacement law

Wien’s displacement law describes the relationship between the intensity of thermal radiation and its wavelength. It reveals that an object's peak emission wavelength shifts towards shorter wavelengths as its temperature increases. This law is crucial for understanding blackbody radiation across var...

8 Jet Set Willy

Jet Set Willy is a classic 1980s arcade and home computer platformer originally created for the ZX Spectrum by Matthew Smith. The game’s notable complexity stems from its procedurally generated levels, ensuring each playthrough offers a unique challenge. Players control Willy, tasked with rescuing h...

9 Captain Scarlet Lieutenant Green

Lieutenant Green, born Seymour Griffiths, is a fictional character in the 1967 Supermarionation series "Captain Scarlet and the Mysterons" created by Gerry and Sylvia Anderson. As Spectrum's computer and electronics expert from Trinidad, Green serves as Colonel White's assistant on Cloudbase, Spectr...

10 Sinclair ZX Spectrum +2

The Sinclair ZX Spectrum +2, released in 1986, was a revised version of the original ZX Spectrum featuring built-in BASIC and twice the RAM (64KB) housed within an updated keyboard design resembling a more conventional desktop computer.

11 Spectrum Internet Modem (Rental)

Spectrum’s rental modem delivers reliable cable internet service. It utilizes DOCSIS 3.1 technology, offering high-speed data transmission suitable for typical residential use. This modem is designed for customers currently subscribed to Spectrum internet plans and requires no additional rental cost...

12 Spectrum Mobile Unlimited Plus

Spectrum Mobile Unlimited Plus offers up to six lines with unlimited data, talk, and text for each subscriber, requiring simultaneous activation of all lines within a single account.

13 Lieutenant Green

Lieutenant Green is Spectrum's communications officer in Captain Scarlet and the Mysterons, a 1967 British Supermarionation series.

14 Captain Scarlet Captain Ochre

Captain Ochre is a fictional character from the 1967 Supermarionation television series "Captain Scarlet and the Mysterons," created by Gerry and Sylvia Anderson. His real name within the series is Richard Fraser, and he serves as a field agent for Spectrum, an international security organization ta...

15 Sinclair ZX Spectrum +3

The Sinclair ZX Spectrum +3 (1987) was a desktop computer featuring an integrated keyboard, built-in BASIC interpreter, and 48K of RAM, representing an upgrade to the original ZX Spectrum design with improved storage via ROM cartridges.

16 Captain Scarlet Doctor Fawn

Doctor Fawn, whose real name is Edward Wilkie, is a fictional character from the 1967 British Supermarionation television series "Captain Scarlet and the Mysterons." Serving as the chief medical officer for the global security organization Spectrum, he operates out of the organization's airborne com...

17 Captain Scarlet Captain Magenta

Captain Magenta is a recurring character in "Captain Scarlet and the Mysterons," a 1960s British science fiction television series created by Gerry and Sylvia Anderson. Within the fictional Spectrum organization, his real name is Patrick Donaghue, an Irish former military intelligence officer who se...

18 IBM Spectrum Protect

IBM Spectrum Protect is a powerhouse for organizations with complex, mixed environments, especially those running mainframes or older, specialized systems. Its strength lies in its ability to provide consistent backup and recovery services across the entire spectrum of IT assets, from z/OS mainframe...

19 Spectrum Mobile Unlimited

Spectrum Mobile Unlimited offers one unlimited data plan for up to six lines, allowing families to share a single data allowance with speeds up to 125 Mbps and includes access to Wi-Fi calling and texting.

20 Spectrum Mobile By the Gig

Spectrum Mobile by the Gig offers customers the flexibility to pay only for the data they use each month, with options ranging from 5GB to 20GB, and includes unlimited talk and text.

21 Timex Sinclair 2068

The Timex Sinclair 2068, released in 1983, was a low-cost British home computer featuring a Zilog Z80A processor and integrated tape drive for program storage, aiming to compete with the Commodore 64 and ZX Spectrum.

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