Solarigraphy is a photographic technique that allows capturing the movement of the Sun over several days, weeks, or even months using crudely made instruments.
The result is an image that demonstrates a static environment, as well as luminous arcs crossing the sky indicating the Sun's trajectory. In regions where seasons are clearly defined, gaps can be observed in these arcs, caused by cloudy days, as well as changes in the Sun's height relative to the horizon.
Professor Angela Cristina Cararo was invited to study this topic in detail within the 'Olhar Espacial' program. She holds bachelor's and specialist degrees in physics from UFPR (in 1987 and 1989, respectively), as well as a master's degree in Geodesy Sciences (2006) and a doctoral degree in the same field (2010).
The professor's main activities are focused on areas such as GPS and the theory of relativity, the GPS time system, and teaching physics. Since March 2010, she has been working as a lecturer at PUCPR, teaching undergraduate students in physics, mathematics, and chemistry courses, including subjects such as modern physics, electromagnetism, classical mechanics, experimental physics, general physics, and introduction to astronomy.
The 'Olhar Espacial' program, led by Marcelo Zurita, President of the Paraíba Astronomy Association (APA), member of the Brazilian Astronomical Society (SAB), Technical Director of Bramon, and National Coordinator of Asteroid Day Brazil, is broadcast live every Friday at 9:00 PM Brazilian time through the publication's official channels on YouTube, Facebook, Instagram, X (formerly Twitter), LinkedIn, and TikTok.
Spotify offers two distinct ways to add music to the platform: by importing MP3 files saved on the device for offline listening or by publishing original works to the official catalog as an artist.
For users who wish to listen to MP3 tracks stored on their smartphone without consuming network data, Spotify allows the import of local files. On both Android and iPhone, it is necessary to activate the feature called 'Local Files' in the app settings so that it can integrate with media stored on the device.
On Android: The process begins by opening Spotify, accessing the settings menu (by clicking the profile picture), selecting 'Settings and privacy,' and then entering 'Apps and devices.' It is necessary to activate the toggle switch next to 'Local audio files.' After this, the user must go to 'Your library' and select the 'Local Files' folder to view and add the MP3 tracks to Spotify.
On iPhone: The import follows specific steps within the iOS system. After activating the 'Local audio files' option in Spotify settings, the user must use the iOS 'Files' manager. They should navigate to 'On My iPhone,' locate the 'Downloads' folder, select the desired songs, return to the 'On My iPhone' folder, and finally move these files to the designated 'Spotify' folder. Then, when accessing the Spotify library, the tracks will be visible in the 'Local Files' folder.
Artists looking to make their compositions available in the official Spotify catalog must use a digital distributor. This company acts as an official intermediary, ensuring that the tracks are sent correctly and that the reproduction copyrights are properly transferred.
The process of placing music on Spotify involves several crucial steps. First, it is essential to choose a digital distributor. Next, the audio must be prepared in a mastered format, exported in high definition and without compression to maintain sound quality. The release metadata, such as composition data and release date, must be organized correctly to ensure cataloging and royalty payments.
Furthermore, it is necessary to produce a square (1:1) and high-resolution cover art. The material must be submitted to the distributor's dashboard in advance for scheduling. Finally, the artist must claim their profile on Spotify for Artists to customize the brand and submit tracks for playlist curation before the release.
The distributor serves as the link between the artist and Spotify, handling the submission of audio and metadata, as well as managing copyrights and collecting royalties. Spotify for Artists functions as the musician's management dashboard, allowing for visual identity customization and indicating tracks for curation, in addition to providing audience metrics and promotion tools.
Several factors can prevent local files from appearing on the phone. Among them are the option not being activated in the settings, the tracks being outside the correct folder (on iPhone, it must be in the app's folder), or the file having an incompatible format or DRM protection. It can also occur if the playlist does not have downloads enabled or if there is a corrupted cache or outdated application. It is possible to synchronize playlists with local files between mobile and PC, provided both use the same account, but playback depends on the existence of the file on both devices, since the service does not store them in the cloud.
It is important to note that, once linked, the files should not be deleted from the device, as Spotify only creates a reading shortcut. If the original media is deleted, the application loses the reference and can no longer access the local files. This feature does not upload to cloud servers.
It is not possible to publish music directly on Spotify without the help of a digital distributor, as the platform does not accept direct submissions from users. Even for independent artists, this service is the only way to put music on Spotify. Trying to bypass this flow, for example, by using podcast formats, violates the platform's rules.
Although Spotify does not charge fees to host tracks, the costs are determined by the contracted distributor. There are free services that charge a percentage of future royalties, while others charge fixed annual fees or per-release fees. Regarding payment, Spotify does not have a fixed rate per play, but data indicates a global average between US$ 0.003 and US$ 0.005 per play, which represents an estimated gain of US$ 3 to US$ 5 every thousand plays, a value that varies according to the listener's country and account model.
For those looking to upgrade their wireless audio equipment, this is the ideal time, as three options for Bluetooth headphones with offers available on Amazon have been gathered. The selection ranges from compact TWS models to over-ear headphones with long battery life, allowing the consumer to choose the product that best suits their style.
The Philips TWS earbuds offer up to 24 hours of autonomy when considering the combined use of the earbuds and the charging case, ensuring continuous use throughout the day. These devices feature a built-in microphone to facilitate calls and use Bluetooth connectivity, presenting a discreet and light black appearance.
Another highlighted option is the Beesev-ONE Bluetooth 5.3 TWS earbud (Black). This model features Bluetooth 5.3 connectivity, which ensures greater signal stability and lower energy consumption. An important feature is the integrated display on the case, which allows for quick checking of the battery level, in addition to offering powerful bass, ideal for those who appreciate a more robust sound. It is compatible with both iOS and Android systems.
For users who prefer the comfort provided by an over-ear headphone, the Philips TAH2300 model is suggested as a robust alternative. Its battery capacity is remarkable, reaching up to 55 hours of playback on a single charge. This headphone's design is foldable, making it easy to transport and store, and it also includes a built-in microphone to maintain convenience during conversations. It is considered an excellent choice for long periods of use, whether at home, in the workplace, or while traveling.
It is important to note that promotional stocks tend to be limited and prices are subject to change at any time. If any of these headphones attract the consumer's interest, it is recommended to access the link immediately to secure the purchase before the promotion ends.
The Agent had lived for a long time in a state he considered a dream lasting over a decade and a half. His daily routine included manually brewing coffee, enjoying it, observing the synchronized movement of autonomous capsules in the city, resting in his office, studying the technical specifications of old machines, and ordering synthesized food. He drove the patrol car, encountered violators, but always found satisfaction in the activity, despite suspicions about what was happening.
Despite knowing all the routes and constantly pursuing violators, the Agent could not shake the desire to question the entire operation. However, that day he decided to act differently, choosing to join the 'desert rats' because he saw no threat from their behavior to the residents of White City.
After infiltrating the community of old machine enthusiasts, he felt something was about to change in his life. Instead, however, an unexpected turn awaited him. After leaving the Commissioner's office, he was immediately summoned to the Chief's office. The Chief informed him that management had decided to automate patrolling 100% starting at three o'clock in the morning the next day, excluding human involvement. Despite the Agent's protests, the Chief offered him the position of supervisor in the Third Level Residential Area Analysis Department to protect him from the desert dust, acknowledging his many years of work.
The Agent accepted the offer, handed over the patrol car diagnostic key, and thanked the Chief. However, realizing that his sixteen-year dream had been canceled by a bureaucratic decree, he discovered in the holographic schedule that the Perimeter Harmonization Protocol was scheduled for 3:00 AM. The first subject of suppression was Colin and his little Locust. The Agent left the key at the logistics counter as Agent 404, and then, using a blocking sticker, set his bracelet biometrics to rest mode, effectively becoming a 'ghost'. He descended into the basement of White City to Zero Level.
Valeria Vance was waiting for him there next to a red Fiat Coupé. She warned him that time was running out. The Agent informed her that he had transferred the token to the system and was now 'asleep'. Valeria reminded him that the protocol started at three o'clock in the morning, and the first target was Colin. She advised him to hurry, as the 500-kilogram tubular chassis would not withstand the first side impact from a Class 9 vehicle. She also pointed out that the only exit from the northern sector was Hydraulic Drainage Tunnel No. 4, which led to the gravel valley, and warned him about the small space between the mirrors and the concrete wall, as well as the high turbo boost pressure.
