Speed of light, redux



Was that a sigh of relief, amusement or disappointment? The world's physicists must have felt one of those emotions last week when they learnt that neutrinos probably do not, after all, travel faster than light.

In theory, nothing can move faster than light. So when an experimental group known as Opera reported last September that it had tracked some neutrinos - tiny, electrically neutral specks of matter - breaking the cosmic speed limit, it appeared that it was "back to the drawing board" for the theory of relativity.

But now one of the Opera partners, the European Organization for Nuclear Research known as CERN, has announced that the faster-than-light finding was probably "an artefact of measurement" - or, stripped of jargon, a mistake. They'll keep repeating the test until they're sure.

Don't laugh too hard. This is exactly the scientific method: form a theory, find a way to test it, do the test, repeat to make sure the result is accurate, confirm or reconfigure your theory, and move on to the next issue.

With intellectual forebears including the 11th-century Syrian scholar Ibn Al Haytham, the scientific method has been - arguably, of course - the principal tool by which humankind has tamed our surroundings.

Modern science, such as subatomic physics, can be hard, costly and slow. But it keeps improving our understanding, one mistake at a time.

How to protect yourself when air quality drops

Install an air filter in your home.

Close your windows and turn on the AC.

Shower or bath after being outside.

Wear a face mask.

Stay indoors when conditions are particularly poor.

If driving, turn your engine off when stationary.

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THREE
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Key Points
  • Protests against President Omar Al Bashir enter their sixth day
  • Reports of President Bashir's resignation and arrests of senior government officials
COMPANY%20PROFILE
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Jigra
Director: Vasan Bala
Starring: Alia Bhatt, Vedang Raina, Manoj Pahwa, Harsh Singh
Rated: 3.5/5

War

Director: Siddharth Anand

Cast: Hrithik Roshan, Tiger Shroff, Ashutosh Rana, Vaani Kapoor

Rating: Two out of five stars 

The specs
Engine: 2.7-litre 4-cylinder Turbomax
Power: 310hp
Torque: 583Nm
Transmission: 8-speed automatic
Price: From Dh192,500
On sale: Now
COMPANY PROFILE
Name: Almnssa
Started: August 2020
Founder: Areej Selmi
Based: Gaza
Sectors: Internet, e-commerce
Investments: Grants/private funding
Company%20Profile
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APPLE IPAD MINI (A17 PRO)

Display: 21cm Liquid Retina Display, 2266 x 1488, 326ppi, 500 nits

Chip: Apple A17 Pro, 6-core CPU, 5-core GPU, 16-core Neural Engine

Storage: 128/256/512GB

Main camera: 12MP wide, f/1.8, digital zoom up to 5x, Smart HDR 4

Front camera: 12MP ultra-wide, f/2.4, Smart HDR 4, full-HD @ 25/30/60fps

Biometrics: Touch ID, Face ID

Colours: Blue, purple, space grey, starlight

In the box: iPad mini, USB-C cable, 20W USB-C power adapter

Price: From Dh2,099

INDIA'S%20TOP%20INFLUENCERS
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The burning issue

The internal combustion engine is facing a watershed moment – major manufacturer Volvo is to stop producing petroleum-powered vehicles by 2021 and countries in Europe, including the UK, have vowed to ban their sale before 2040. The National takes a look at the story of one of the most successful technologies of the last 100 years and how it has impacted life in the UAE. 

Read part four: an affection for classic cars lives on

Read part three: the age of the electric vehicle begins

Read part two: how climate change drove the race for an alternative 

MATCH INFO

Liverpool 2 (Van Dijk 18', 24')

Brighton 1 (Dunk 79')

Red card: Alisson (Liverpool)

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The specs

Engine: 1.5-litre turbo

Power: 181hp

Torque: 230Nm

Transmission: 6-speed automatic

Starting price: Dh79,000

On sale: Now

Ad Astra

Director: James Gray

Stars: Brad Pitt, Tommy Lee Jones

Five out of five stars 

'Brazen'

Director: Monika Mitchell

Starring: Alyssa Milano, Sam Page, Colleen Wheeler

Rating: 3/5

Brief scores:

Toss: Kerala Knights, opted to fielf

Pakhtoons 109-5 (10 ov)

Fletcher 32; Lamichhane 3-17

Kerala Knights 110-2 (7.5 ov)

Morgan 46 not out, Stirling 40

Pakistanis%20at%20the%20ILT20%20
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Bib%20Gourmand%20restaurants
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Isle of Dogs

Director: Wes Anderson

Starring: Bryan Cranston, Liev Schreiber, Ed Norton, Greta Gerwig, Bill Murray, Jeff Goldblum, Scarlett Johansson

Three stars

Visa changes give families fresh hope

Foreign workers can sponsor family members based solely on their income

Male residents employed in the UAE can sponsor immediate family members, such as wife and children, subject to conditions that include a minimum salary of Dh 4,000 or Dh 3,000 plus accommodation.

Attested original marriage certificate, birth certificate of the child, ejari or rental contract, labour contract, salary certificate must be submitted to the government authorised typing centre to complete the sponsorship process

In Abu Dhabi, a woman can sponsor her husband and children if she holds a residence permit stating she is an engineer, teacher, doctor, nurse or any profession related to the medical sector and her monthly salary is at least Dh 10,000 or Dh 8,000 plus accommodation.

In Dubai, if a woman is not employed in the above categories she can get approval to sponsor her family if her monthly salary is more than Dh 10,000 and with a special permission from the Department of Naturalization and Residency Dubai.

To sponsor parents, a worker should earn Dh20,000 or Dh19,000 a month, plus a two-bedroom accommodation

 

 

 

The biog

Name: Shamsa Hassan Safar

Nationality: Emirati

Education: Degree in emergency medical services at Higher Colleges of Technology

Favourite book: Between two hearts- Arabic novels

Favourite music: Mohammed Abdu and modern Arabic songs

Favourite way to spend time off: Family visits and spending time with friends

The specs

Engine: four-litre V6 and 3.5-litre V6 twin-turbo

Transmission: six-speed and 10-speed

Power: 271 and 409 horsepower

Torque: 385 and 650Nm

Price: from Dh229,900 to Dh355,000

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Joker: Folie a Deux

Starring: Joaquin Phoenix, Lady Gaga, Brendan Gleeson

Director: Todd Phillips 

Rating: 2/5

Know your cyber adversaries

Cryptojacking: Compromises a device or network to mine cryptocurrencies without an organisation's knowledge.

Distributed denial-of-service: Floods systems, servers or networks with information, effectively blocking them.

Man-in-the-middle attack: Intercepts two-way communication to obtain information, spy on participants or alter the outcome.

Malware: Installs itself in a network when a user clicks on a compromised link or email attachment.

Phishing: Aims to secure personal information, such as passwords and credit card numbers.

Ransomware: Encrypts user data, denying access and demands a payment to decrypt it.

Spyware: Collects information without the user's knowledge, which is then passed on to bad actors.

Trojans: Create a backdoor into systems, which becomes a point of entry for an attack.

Viruses: Infect applications in a system and replicate themselves as they go, just like their biological counterparts.

Worms: Send copies of themselves to other users or contacts. They don't attack the system, but they overload it.

Zero-day exploit: Exploits a vulnerability in software before a fix is found.

Scoreline

Liverpool 4

Oxlade-Chamberlain 9', Firmino 59', Mane 61', Salah 68'

Manchester City 3

Sane 40', Bernardo Silva 84', Gundogan 90' 1