Temat: 43.75.+a - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Effect of Wood on the Sound Quality of Electric String Instruments
Autorzy:: Puszyński, J.
Moliński, W.
Preis, A.
Powiązania:: https://bibliotekanauki.pl/articles/1383687.pdf
Data publikacji:: 2015-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 43.75.+a
83.80.Mc
Opis:: The objective of the study was to investigate the influence of wood species on sound timbre generated by electric string instruments. The obtained results allow to conclude that wood species have the largest influence on the specific sound loudness and it correlates with density and modulus of elasticity. The greater differences occur at lower frequencies. There was no correlation between signal recorded by microphone and pickup.
Źródło:: Acta Physica Polonica A; 2015, 127, 1; 114-116
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Real-Time Spectroscopy of Acoustic Waves or Music as Physical Phenomenon
Autorzy:: Zieliński, P.
Powiązania:: https://bibliotekanauki.pl/articles/1945188.pdf
Data publikacji:: 1996-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 43.75.+a
43.66.+y
43.64.+r
Opis:: The sounds used in music have discrete spectra consisting of a fundamental frequency and of its integer multiples. This is the reason for an affinity of the sounds for which the ratio of the fundamental frequencies is given by a fraction of small integers. Two possible physical mechanisms for this affinity are discussed: (1) an influence of beats between some partial tones and (2) nonlinear interactions between partial tones. Some facts from the music theory are then explained as resulting from the invariance of the most consonant intervals between affine sounds against variations of the timbre and of the register. An analogy is indicated between the classical cadence and the lock-in effect in incommensurate crystals. The lecture is illustrated with extracts from the J.S. Bach Das Wohltemperierte Klavier, the W.A. Mozart sonata for piano KV 570 and a recitative from the Haendel Messiah.
Źródło:: Acta Physica Polonica A; 1996, 89, 2; 265-271
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Analysis of the Thermal and Magnetic Properties of Amorphous Ribbons of Fe₆₁Co₁₀B₂₀Y₈Me₁ (where Me = W, Zr, Nb, Mo)
Autorzy:: Pietrusiewicz, P.
Nabiałek, M.
Powiązania:: https://bibliotekanauki.pl/articles/1032157.pdf
Data publikacji:: 2017-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.43.Dq
75.50.Kj
65.60.+a
75.30.Gw
Opis:: This paper presents the results pertaining to thermal and magnetic studies of rapidly-cooled samples of the alloy family Fe₆₁Co₁₀B₂₀Y₈Me₁ (where Me = Nb, Zr, W, Mo). The resulting ribbons, or tapes, have amorphous structure. It has been found that the addition of Me elements alters the thermal and magnetic properties. It is noted that the saturation magnetization decreases with increasing number of unpaired electrons on the valence shells. In addition, the value of the coercivity and effective anisotropy have been determined.
Źródło:: Acta Physica Polonica A; 2017, 131, 4; 678-680
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Crystallization Processes of $R_{4.5}Fe_{77}B_{18.5}$ (R = Pr, Nd) Amorphous Alloys
Autorzy:: Musiał, A.
Śniadecki, Z.
Pagnani, D.
Idzikowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/1371300.pdf
Data publikacji:: 2014-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.43.Dq
65.60.+a
75.50.Bb
Opis:: The amorphous alloys $R_{4.5}Fe_{77}B_{18.5}$ (R=Pr, Nd) were prepared by melt-spinning technique under argon atmosphere on a cooper wheel rotating with surface velocity of 25 m·$s^{-1}$. The ribbons have been investigated by means of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Temperatures of crystallization for $Pr_{4.5}Fe_{77}B_{18.5}$, measured at the heating rate 20 K/min, are equal $T_{x1}$=591°C for the first exothermic effect and $T_{x2}$=603°C for the second one (for $Nd_{4.5}Fe_{77}B_{18.5} T_{x1}$=594°C and $T_{x2}$=633°C). In the amorphous ribbons the crystallization of $Fe_{3}B$ phase in the first step, followed by the crystallization of $Pr_{2}Fe_{23}B_{3}$ and $Nd_{2}Fe_{23}B_{3}$, was observed. Both later phases appear in the process of recrystallization, immediately after $Fe_{3}B$ formation.
Źródło:: Acta Physica Polonica A; 2014, 126, 1; 316-317
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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